Question

#include<stdio.h>
int main(int argc, char **argv)
{
 int a,b,c;

 printf("enter two numbers:-");
 if( scanf("%d \t %d",&a,&b)  == 2 )
 {
    c=a+b;
     printf("addition of numbers= %d",c);
 }
 else {
        printf("please enter a valid input");
        getchar();
    }
}

How to debug this code line by line in the c-debugger?
I’m using linux platform.

Answer 1

Which debugger? In MS Visual Studio Express just place a breakpoint at the first line of the code and then start “Debug”.

On a Linux platform, compile the code with debugging flags (-g) and then run the resulting executable under gdb.

Suppose your file is test.c. Compile:

gcc -g -o test test.c

Then debug:

gdb test

See this article for more details. Google “linux debug c program” for even more.