This lab report summarizes an experiment on conditional operators, nested loops, and goto statements in C programming. It includes examples of using conditional operators to check student results, nested for loops to print a pattern of numbers, and the goto statement to repeat a number input. The report concludes the experiment taught important programming concepts like decision making and loop control flow. Homework problems provide additional examples of half pyramids, largest number comparisons, and nested loop patterns.

1. Lab Report
Course ID: TE-3702
Course Title:-Computer Application and Programming
(Sessional)
Experiment No. 05
Name:-Introduction to C conditional operator, nested loop
and go to statement.
Submitted by
Name :
ID :
Year and Semester :
Session :
Department :
Mahbubay Rabbani
175035
3/1
2018-19
Textile Engineering
Submitted to
Khawja Imran Masud
Lecturer
Department of CSE
Dhaka University of Engineering & Technology (DUET), Gazipur

2. Introduction:-
The conditional statements are the decision-making statements which
depends upon the output of the expression.
A loop inside another loop is called a nested loop.
The goto statement is a jump statement which is sometimes also called
unconditional jump statement. The goto statement can be used to jump
from anywhere to anywhere within a function.
Objectives:-
 To know about conditional operator.
 To know about nested loop.
 To know about “goto” statement.

3. Conditional Operator
Conditional statements are decision-making statements that depend on
the output of the expression.
It is represented by two symbols that are '?' and ':'.
It works on three operands and that’s why it is also called the ternary
operator.
The behavior of the conditional operator is similar to the 'if-else'
statement as 'if-else' statement is also a decision-making statement. This
helps the ternary operator to think of it as a shorthand way to write a
statement.
The ternary operator works with the 3 following principles:-
 The first is a comparison argument
 The second is upon the results of true comparisons
 The third results in a false comparison

4. Example:-
C program to check student result using conditional operator
Input:-
#include <stdio.h>
int main()
{
int mark;
printf("Enter the mark=");
scanf("%d", &mark);
puts(mark>=40?"Pass":"Fail");
return 0;
}

5. Output

6. Nested loop
A loop inside another loop is called a nested loop.
The depth of nested loop depends on the complexity of a problem.
Using a for loop within another for loop is called nested for loop.
In nested for loop one or more statements can be included in the body of
the loop.
Example:-
Input:-
#include <stdio.h>
int main()
{
int a, b;
for(a=1;a<=5;a++)
{
for(b=1;b<=5;b++)
{
printf("%d ",b);
}
printf("n");
}
return 0;
}

7. Output:-

8. go to statement
The goto statement is a jump statement which is sometimes called
unconditional jump statement. The goto statement can be used to jump
from anywhere to anywhere within a function. Here a label is used
which is a user-defined identifier and indicates the target statement. It
can be set anywhere in the C program above or below to goto statement.
Example
Write a C program that take the any double numbers between 1 to
10 and calculate the square root of that number.
input:-
#include<stdio.h>
int main()
{
double x,y;
read:
printf("Enter the double number between 1 to 10=");
scanf("%lf", &x);
if(x<0 || x>10)
goto read ;
y=sqrt(x);
printf( "%lf",y);
return 0;
}

9. Output:-

10. Home task problems:-
Problem:-
Find the largest number among 3 input numbers using conditional
operator.
Input:-
# include <stdio.h>
int main()
{
int a, b, c, large ;
printf("Enter 1st number=");
scanf("%d",&a);
printf("Enter 2nd number=");
scanf("%d",&b);
printf("Enter 3rd number=");
scanf("%d",&c);
large = a > b ? (a > c ? a : c) : (b > c ? b : c) ;
printf("The largest number is=%d",large);
}

11. Output:-

12. Problem:-
Write a C program that display half Pyramid of *
*
* *
* * *
* * * *
* * * * *
Input:-
#include <stdio.h>
int main() {
int i, j, rows;
printf("Enter the number of rows: ");
scanf("%d", &rows);
for (i = 1; i <= rows; i++)
{
for (j = 1; j <= i; j++)
{
printf("* ");
}
printf("n");
}
return 0;
}

13. Output:-

14. Problem:-
Write a C program that display Half Pyramid of Numbers
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
Input:-
#include <stdio.h>
int main()
{
int i,j,rows;
printf("Enter the number of rows=");
scanf("%d", &rows);
for(i=1; i<=rows; i++)
{for (j=1; j<=i; j++)
{
printf("%d",j);
}
printf("n");
}
return 0;}

15. Output:-

16. Problem:-
Write a C program that display Inverted Half Pyramid of *
* * * * *
* * * *
* * *
* *
*
Input:-
#include <stdio.h>
int main()
{
int i,j,rows;
printf("Enter the number of rows=");
scanf("%d", &rows);
for(i=rows; i>=1; i--)
{for (j=1; j<=i; j++)
{
printf("*");
}
printf("n");
}
return 0;
}

17. Output:-

18. Lab Assessment:-
Problem:-
Write a C program that displays Inverted Half Pyramid of Number.
1 2 3 4 5
1 2 3 4
1 2 3
1 2
1
Input: 5
Input:-
#include <stdio.h>
int main()
{
int i,j,rows;
printf("Enter the number of rows=");
scanf("%d", &rows);
for(i=rows; i>=1; i--)
{for (j=1; j<=i; j++)
{
printf("%d",j);
}
printf("n");
}

19. return 0;
}
Output:-

20. Problem:-
Write a C program that display the pattern given below.
1
2 3
4 5 6
7 8 9 10
Input: 4
Input:-
#include <stdio.h>
int main()
{
int rows, i, j, number = 1;
printf("Enter the number of rows= ");
scanf("%d", &rows);
for (i=1; i<= rows; i++)
{
for (j=1; j<=i; j++)
{
printf("%d ", number);
++number;
}
printf("n");
}

21. return 0;
}
Output:-

22. Conclusion:- From this experiment we have learn about C conditional
operator, goto statement and nested loop which are very important for
programming. I think it will help me a lot in practical life