This document provides instructions for a lab exercise on using an integrated development environment (IDE) for writing and debugging C programs. Students are asked to: 1. Write two C programs - one to display a person's name and age over years, and another to calculate the average of 5 numbers. 2. Compile and run the programs, noting and correcting any errors. 3. Use the IDE's debugging tools like breakpoints, stepping, and watches to debug errors in calculations or output. The goal is to practice using an IDE for writing, compiling, running and debugging C programs from within the IDE's interface.

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UNIVERSITI TUN HUSSEIN ONN MALAYSIA
FACULTY OF MECHANICAL AND MANUFACTURING ENGINEERING
BTI 10202: COMPUTER PROGRAMMING
LAB 1 : Using Integrated Development Environment (IDE)
NAME : _________________________________
MATRICS NO.: _______________ DATE : _________ (MARKS)
Objectives: Learn to use the IDE
1. Write a C program and compile it
2. Compilation and Linking error exercises
3. Running the program
4. Debugging
Procedures:
1. Go to menu bar File New Source File (left click). (Figure 1)
Figure 1

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2. When a blank screen appears, save the source file using File Save As. Save the
file as Lab1_1.c.
3. Type in the below program in the Editor screen.
/*Program 1*/
#include<stdio.h>
main()
{
char name[30];
int born, x,y;
printf("What is your name: ");
scanf("%s",name);
printf("nnWhich year were you born? 19");
scanf("%d", &born);
for(x=born+1,y=1;x<=99;++x,++y)
{
printf("nHello! %sn",name);
printf("nAt 19%d",x);
printf("nYou are %d years oldn",y);
system("Pause");
}
return 0;
}
4. Remember to save your program frequently to prevent data loss. After finish
typing, click the menu bar Execute Compile. If the program is error free then
the IDE will tell that the compile status is Done. (Figure 2)
5. Next, click Execute Run. A command prompt window will appear. (Figure 3)

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Figure 2
Figure 3

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6. Add a new source file and type the below program and save as Lab1_2.c
/*Program to find the average of 5 numbers*/
#include<stdio.h>
main()
{
int count; //variable to count 5 numbers
float value, avg; //variables for value and average
float total=0; //set the total to start with 0
clrscr(); //start with fresh screen
printf("n**Program to Compute the Average**nn");
printf("Insert your 5 numbers:n");
for (count=1;count<>5;count++)
{
printf("nnInsert value %d>", count);
scan("%f",&value);
total=total-value; //add the given values
}
//find the average and print on screen
avg=total/5.0;
printf("nThe average is = %.1fn",avg);
getch(); //wait until key is pressed
return 0;
}
7. Compile the program.
8. View the error messages at the Compiler tab at the bottom of your screen.
Determine the line at which error occurs. Otherwise double click at the Error
message. List the error messages. (Figure 4)
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Figure 4
9. Correct the compilation errors until no error messages appear. Corrected program
is saved as another name.
10. Run the corrected program and follow the on screen procedures. View the answer
on screen. What do you think of it?
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11. If there are errors in the answer, do debugging.
12. Go to the corrected program screen.
13. How to debug using Breakpoint.
a. Set breakpoint(s) where you want the debugger to stop (otherwise it will
just run the program). To set a breakpoint on a line, just click on the gutter
(the gray band on the left), or press Ctrl-F5. Set the breakpoints at
total=total-value and avg=total/5.0. (Figure 5)

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Figure 5
b. Launch the debugger, by pressing F8 or clicking the debug button.
Observe the source page and the output page. Write down your
observation to the lines of your code.
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c. If everything goes well, the program will start, and then stop at the first
breakpoint. Then you can step through the code, entering function calls, by
pressing Shift-F7 or the "Step Into" button, or stepping over the function
calls, by pressing F7 or the "Next Step" button. You can press Ctrl-F7 or
the "Continue" button to continue execution till the next breakpoint. At
any time, you can add or remove breakpoints.
d. You can display your variables (after you reached a breakpoint) in two
different ways :
- Click on the Add Watch (shortcut: F4) button, type the name of your
variable in the dialog, and press OK. If you select a word in the current
source file and press F4, it will add a watch of the selected text without
asking for a variable name.
- Point your mouse over a variable in your source code (if Watch variable
under mouse is enabled in Environment OptionsID_ENVIRONMENT)
and it will be added to the watch list. (Figure 6)
e. Check and compile until the program has no error messages. Copy the
final corrected program.

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Figure 6
.
Finalized error free program