p1debuglog.txt

 gcc -g p1final.c
 gdb a.out
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Reading symbols from a.out...done.
(gdb) b main
Breakpoint 1 at 0x7fc: file p1final.c, line 16.
(gdb) r
Starting program: /home/runner/IA1-Revision/a.out 
warning: Error disabling address space randomization: Operation not permitted

Breakpoint 1, main () at p1final.c:16
16  {
(gdb) n
17      int a,b,sum=0;
(gdb) n
18      input(&a,&b);
(gdb) s
input (a=0x7fff466d567c, b=0x7fff466d5680) at p1final.c:4
4       printf("enter two numbers\n");
(gdb) n
enter two numbers
5       scanf("%d%d",a,b);
(gdb) n
1
2
6   }
(gdb) n
main () at p1final.c:19
19      add(a,b,&sum);
(gdb) s
add (a=1, b=2, sum=0x7fff466d5684) at p1final.c:9
9       *sum=a+b;
(gdb) n
10  }
(gdb) p sum
$1 = (int *) 0x7fff466d5684
(gdb) n
main () at p1final.c:20
20      output(a,b,sum);
(gdb) s
output (a=1, b=2, sum=3) at p1final.c:13
13      printf("sum of %d + %d is %d",a,b,sum);
(gdb) p sum
$2 = 3
(gdb) p a
$3 = 1
(gdb) o b
Ambiguous command "o b": obscure, output, ov, overlay, ovly.
(gdb) p b
$4 = 2
(gdb) n
14  }
(gdb) n
main () at p1final.c:21
21      return 0;
(gdb) n
22  }(gdb) n
__libc_start_main (main=0x55a1e92007f4 <main>, argc=1, argv=0x7fff466d5778, 
    init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, 
    stack_end=0x7fff466d5768) at ../csu/libc-start.c:344
344 ../csu/libc-start.c: No such file or directory.
(gdb) n
sum of 1 + 2 is 3[Inferior 1 (process 108) exited normally]
(gdb)