Bti1022 lab sheet 7
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The document contains a series of programming exercises that demonstrate the use of loops, functions, and the goto statement in C programming. It includes sample code for programs that calculate the total and average price of items using for loops and functions. The exercises ask the reader to study the sample code, modify aspects of it, and explain how various programming concepts like loops, functions, and goto work.
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![left0UNIVERSITI TUN HUSSEIN ONN MALAYSIA<br />FACULTY OF MECHANICAL AND MANUFACTURING ENGINEERING <br />BTI 1022: COMPUTER PROGRAMMING<br />LAB EXERCISE 7 LOOP, GOTO and FUNCTION intro<br />Exercise 1:<br />,[object Object],int main()<br />{<br /> double price1, price2 ,price3,price4, price5, price6, price7, totalprice=0;<br /> printf(quot;
Program to calculate the average and total price of the 7 itemsquot;
);<br /> printf(quot;
Enter price of item: RMquot;
);<br /> scanf(quot;
%lfquot;
, &price1);<br /> totalprice +=price1;<br /> printf(quot;
Enter price of item: RMquot;
);<br /> scanf(quot;
%lfquot;
, &price2);<br /> totalprice +=price2;<br /> printf(quot;
Enter price of item: RMquot;
);<br /> scanf(quot;
%lfquot;
, &price3);<br /> totalprice +=price3;<br /> printf(quot;
Enter price of item : RMquot;
);<br /> scanf(quot;
%lfquot;
, &price4);<br /> totalprice +=price4;<br /> printf(quot;
Enter price of item : RMquot;
);<br /> scanf(quot;
%lfquot;
, &price5);<br /> totalprice +=price5;<br /> printf(quot;
Enter price of item : RMquot;
);<br /> scanf(quot;
%lfquot;
, &price6);<br /> totalprice +=price6;<br /> printf(quot;
Enter price of item : RMquot;
);<br /> scanf(quot;
%lfquot;
, &price7);<br /> totalprice +=price7;<br /> printf(quot;
The total price of the item is: RM%0.2lf quot;
, totalprice);<br /> printf(quot;
The average price of the item is: RM%0.2lf quot;
, totalprice/7);<br /> printf(quot;
End of programquot;
);<br /> getch();<br /> return 0;<br />}<br />,[object Object]](https://image.slidesharecdn.com/bti1022labsheet7-110306065035-phpapp02/85/Bti1022-lab-sheet-7-1-320.jpg)
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Similar to Bti1022 lab sheet 7
Dti2143 lab sheet 8
The program takes in student test, assignment, and final exam marks as input. It calculates the total and average marks, determines the grade based on the average, and displays the student's name, matric number, total, average, and grade. The coding is then modified to:
1. Define a sub-function called getio() to handle input and output with the user
2. Move the input and output code into the getio() function
3. Call getio() from main() to get the input and display output.
Dti2143 lab sheet 7
The document contains 4 programming exercises that demonstrate the use of functions and GOTO statements in C programming.
Exercise 1 calculates the Fibonacci sequence using a recursive function.
Exercise 2 calculates a student's mark by separating the program logic into main(), getio(), calc(), and disp() functions.
Exercise 3 finds the maximum of 3 integers by defining a maximum() function that takes 3 arguments and returns the largest value.
Exercise 4 demonstrates the use of GOTO statements to direct program flow based on user input. It asks the user questions about food preferences and directs the output accordingly.
Dti2143 dam31303 lab sheet 8
The document contains instructions for 3 programming exercises:
1. Write a program to calculate student marks using functions like main(), getio(), calc(), disp().
2. Study a program using goto statements to direct program flow based on user input, then rewrite the program as an example using goto.
3. Rewrite a program that prints out the elements of a 2D array to instead: accept 12 numbers as input, calculate the total, and calculate the average.
Bti1022 lab sheet 8
This document contains instructions and code for several loop exercises:
1. It provides examples of for and while loops and asks to draw flowcharts for each.
2. It includes code for a program that calculates and displays a student's test scores, total, average, and grade using functions.
3. The main function prompts the user to enter a student's information, calls the functions to calculate values, displays the results, and allows the user to process another student.
Bti1022 lab sheet 8
1) The document provides instructions and examples for using for and while loops in C programming. It includes 5 exercises to draw flowcharts for different loop structures.
2) It also includes a full C program to calculate and display a student's test results using functions to calculate total score and average, and a loop to repeatedly input student data.
3) The program demonstrates the use of functions, loops, conditional statements, and input/output operations to solve a typical programming problem.
Dti2143 lab sheet 9
1) The document contains 5 programming exercises involving recursive functions, factorials, loops, and switch/case statements.
2) For each exercise, the student is asked to compile and run the provided code, explain how it works, and make modifications as instructed.
3) Modifications include changing hardcoded values to user input, altering loop structures, and replacing switch/case with if/else statements.
E1 – FundamentalsPlease refer to announcements for details about.docx
E1 – Fundamentals
Please refer to announcements for details about this exam. Make sure you fill the information below to avoid not being graded properly;
Last Name
Thalheimer
First Name
Kristoffer
Student ID #
Thalheimer
Here is the grading matrix where the TA will leave feedback. If you scored 100%, you will most likely not see any feedback (
Question
# points
Feedback
Max
Scored
1
Tracing
3
2
Testing
2
3
Refactoring
2
4
Debugging
3
Question #1 – Tracing Programs
We are going to trace the following program, i.e. simulate in your head how it would execute on a computer. To help you, a trace table is provided for you to fill.
For each “execution step” of the program, write down in the table the line being executed along with the value of each variable which was modified.
Please note that we omitted the usual main function definition and other #include statements. We assume the following fragment to be inside a main function.
Program to Trace
1
int something = 5;
2
int data = 42;
3
int n = 0;
4
5
for( n = 0 ; data > 0 ; n++){
6
data -= something;
7
}
8
9
if( data < 0) n--;
Trace Table to Fill
Feel free to add / remove rows if necessary
Step #
Line #
Variables Values
Remarks
something
data
n
1
2
3
…
Question #2 – Testing Programs
You are going to write tests for the following program fragment which we assume to be inside a main function. Its requirements are to
· Prompt the user for two int numbers X and Y
· If Y is zero the program should display “Error #1” then exit.
· Otherwise, if any of the two input value is less or equal to zero, it should display “Error #2” then exit.
· Otherwise, it should display how many times Y goes into X.
This is the equivalent of the integer division of X by Y.
Your objective is to write tests which will guarantee
· The program conforms to the requirements
· All possible execution paths have been tested
· Your program does not feature any errors
Program to Test
1
int div = 0;
2
int data = 0;
3
int n = 0;
4
printf("Enter positive int to divide: ");
5
scanf("%d", &data);
6
7
printf("Enter positive int to divide it by: ");
8
scanf("%d", &div);
9
10
if(div == 0){
11
printf("Error #1\n");
12
exit(EXIT_FAILURE);
13
}
14
15
if((data <= 0) || (div <= 0)){
16
printf("Error #2\n");
17
exit(EXIT_FAILURE);
18
}
19
20
for( n = 0 ; data > 0 ; n++){
21
data -= div;
22
}
23
24
if( data < 0) n--;
25
26
printf("Ouput value is %d\n", n);
Tests Table to Fill
Feel free to add / remove rows if necessary
Test #
Inputs’ Values
Expected Results
Explanations;
What did you use this test for?
Why is it not redundant with others?
div
data
n
Error
1
2
3
…
Question #3 – Refactoring Programs
Refactor the following code to improve it in terms of readability, documentation, redundancy. Regarding redundancy, we really don’t like having twice the same printf/scanf but we don’t want a solution where the ...
C Programming Lab.pdf
The document describes a C program to perform string operations on a given paragraph. These operations include:
1. Counting the total number of words by comparing characters to space and tab delimiters.
2. Capitalizing the first word of each sentence by checking for punctuation marks denoting the end of a sentence.
3. Replacing a given word with another word by matching user input words in the text.
The program takes user input for the paragraph and menu selection, performs the selected operation, and displays the output.
C important questions
The document provides 20 programming problems and their solutions. Some of the key problems include: writing programs to calculate factorial using recursion, determine if a number is even or odd, swap two numbers using temporary/bitwise operators, find greatest of 3/10 numbers, check if a number is prime/palindromic, and check if a string is a palindrome. The solutions provide sample code snippets and explanations with examples to illustrate the logic.
Ch5(loops)
The document discusses different types of loops in Java including while, do-while, and for loops. It provides examples of using each loop type to repeatedly print a string, generate math quiz questions, and calculate a sum of user inputs. Key aspects covered include initializing and updating a loop counter, loop continuation conditions, and using loops with sentinel values to control the number of iterations.
Core programming in c
This C program takes in an integer from the user and converts it to its binary equivalent. It uses bitwise operators like right shift and AND to extract each bit and check if it is 1 or 0. A loop shifts the number by 31, 30, 29 ... 1, 0 bits and ANDs it with 1 each time to extract the bits, printing 1 for each bit that is 1 and 0 for each bit that is 0, effectively converting the decimal number to its 32-bit binary representation.
Here is the grading matrix where the TA will leave feedback. If you .docx
Here is the grading matrix where the TA will leave feedback. If you scored 100%, you will most likely not see any feedback
J
Question
# points
Feedback
Max
Scored
1
Tracing
3
2
Testing
2
3
Refactoring
2
4
Debugging
3
Question #1 – Tracing Programs
We are going to trace the following program, i.e. simulate in your head how it would execute on a computer. To help you, a trace table is provided for you to fill.
For each “execution step” of the program, write down in the table the line being executed along with the value of each variable which was modified.
Please note that we omitted the usual
main
function definition and other #include statements. We assume the following fragment to be inside a
main
function.
Program to Trace
1
int something = 5;
2
int data = 42;
3
int n = 0;
4
5
for( n = 0 ; data > 0 ; n++){
6
data -= something;
7
}
8
9
if( data < 0) n--;
Trace Table to Fill
Feel free to add / remove rows if necessary
Step #
Line #
Variables Values
Remarks
something
data
n
1
2
3
…
Question #2 – Testing Programs
You are going to write tests for the following program fragment which we assume to be inside a
main
function. Its requirements are to
-
Prompt the user for two int numbers X and Y
-
If Y is zero the program should display “Error #1” then exit.
-
Otherwise, if any of the two input value is less or equal to zero, it should display “Error #2” then exit.
-
Otherwise, it should display how many times Y goes into X.
This is the equivalent of the integer division of X by Y.
Your objective is to write tests which will guarantee
-
The program conforms to the requirements
-
All possible execution paths have been tested
-
Your program does not feature any errors
Program to Test
1
int div = 0;
2
int data = 0;
3
int n = 0;
4
printf("Enter positive int to divide: ");
5
scanf("%d", &data);
6
7
printf("Enter positive int to divide it by: ");
8
scanf("%d", &div);
9
10
if(div == 0){
11
printf("Error #1\n");
12
exit(EXIT_FAILURE);
13
}
14
15
if((data <= 0) || (div <= 0)){
16
printf("Error #2\n");
17
exit(EXIT_FAILURE);
18
}
19
20
for( n = 0 ; data > 0 ; n++){
21
data -= div;
22
}
23
24
if( data < 0) n--;
25
26
printf("Ouput value is %d\n", n);
Tests Table to Fill
Feel free to add / remove rows if necessary
Test #
Inputs’ Values
Expected Results
Explanations;
What did you use this test for?
Why is it not redundant with others?
div
data
n
Error
1
2
3
…
Question #3 – Refactoring Programs
Refactor the following code to improve it in terms of readability, documentation, redundancy. Regarding redundancy, we really don’t like having twice the same printf/scanf but we don’t want a solution where the loop’s condition would be repeated twice either.
You will provide your version in the “Your Modified Version” subsection which is already pre-filled with the original. Then, for each thing you modified, use the table in the “Summary” subsection to sum.
Bti1022 lab sheet 9 10
1) The document provides instructions and code snippets for a series of programming exercises involving recursion, loops, conditional statements, and functions.
2) Students are asked to explain the logic and flow of the provided code, and to modify the code by adding user input, changing loop structures, and altering conditional statements.
3) The exercises cover fundamental programming concepts like recursion, looping, input/output, conditional execution, and functions.
C file
The document contains 24 C programming examples demonstrating various programming concepts like input/output, arithmetic operations, conditional statements, loops, functions, strings, arrays and matrices. The examples include programs to calculate sum and average, area of shapes, simple and compound interest, employee salary calculation, swapping values, finding largest number, checking vowels, printing tables, factorials, reversing numbers, string operations and matrix addition.
C code examples
1. The document lists 30 programming problems commonly asked during interviews for C programming jobs. The problems cover a range of concepts like recursion, data structures, algorithms, and string manipulation.
2. Example problems include writing programs to find the factorial of a number, check if a number is prime, swap two numbers without a temporary variable, find the greatest among three numbers, and check if a number is a palindrome.
3. Many problems ask the candidate to solve the problem in unique ways, like printing text without using semicolons or specific functions. This tests their creativity and problem-solving abilities in C.
Programming fundamental 02
This document discusses C programming concepts including data types, variables, operators, conditional statements, loops, and functions. It contains code examples to find the size of different data types, if/else statements, for/while loops, break/continue statements, and switch statements. The key points covered are:
- Using the sizeof operator to determine the size of int, float, double, char, and other variable types.
- If/else and if/else ladder conditional statements for comparing values.
- For, while, and do-while loop structures for iteration.
- Break and continue statements for early loop termination or skipping iterations.
- Switch statement for multiple conditional comparisons using case labels.
Write a program to check a given number is prime or not
The document contains 6 algorithms for solving different programming problems:
1. A program to check if a number is prime or not using a while loop.
2. A program to check if a number is a Krishnamurty number using factorial calculations in a while loop.
3. A recursive function to generate the Fibonacci series.
4. A program to print an array in reverse order using a for loop.
5. A program to merge two sorted arrays into a single sorted array using a while loop.
6. A program to check if a string is a palindrome without built-in functions by reversing the string and comparing the original and reversed strings.
Presentation1
Switch case statements can be used as a substitute for long if-else statements when comparing an integral value. The switch statement allows executing different blocks of code based on the value of a variable. It contains case labels that match values and an optional default case to handle unexpected values. Break statements are used to exit each case block and prevent falling through to the next block.
Lab 2
This document contains instructions for Lab 2 of the Computer Programming Basics course. The objectives are to learn to write pseudo code and draw flow charts. Students are asked to explain desirable program characteristics, determine the purpose and variables of sample C programs, analyze problems and represent the solutions using flow charts and pseudo code, and translate a sample compound interest program into a flow chart.
Simple Java Programs
The document provides code examples for several basic Java programs, including:
1) A program that compares two numbers and prints which is greater.
2) A program that takes a number as input and prints all even numbers between 1 and the input.
3) Programs that calculate the area and perimeter of shapes like circles and rectangles.
4) Programs that calculate the factorial of a number and construct a triangle shape using asterisks.
5) A program that finds and lists all leap years between two given years.
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E1 – FundamentalsPlease refer to announcements for details about.docx
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Here is the grading matrix where the TA will leave feedback. If you .docx
Here is the grading matrix where the TA will leave feedback. If you .docx
Write a program to check a given number is prime or not
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Here are some potential ways to represent relational databases other than using tables and relationships:
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The document provides information on various selection control structures in C programming:
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Bti1022 lab sheet 7
- 2. What does the program do?
- 3. Why do you need 7 variables to hold the prices of the items?
- 4. Why is the variable totalprice initialized to 0?
- 5. Identify the set of statements that are repeated many times in the program
- 10. From the program above, explain how goto works
- 13. Explain how the coding works.