Backpacking

input/code.c: In function 'main':
input/code.c:4:5: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    4 |     scanf("%d %d", &a, &b);
      |     ^~~~~
input/code.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | int main(void)
input/code.c:4:5: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    4 |     scanf("%d %d", &a, &b);
      |     ^~~~~
input/code.c:4:5: note: include '<stdio.h>' or provide a declaration of 'scanf'

int main(void)
{
    int a,b,o;
    scanf("%d %d", &a, &b);
    o = a+b;
    return o;
}

Test 1

Verdict: RUNTIME ERROR

Test 2

Verdict: RUNTIME ERROR

Test 3

Verdict: RUNTIME ERROR

Test 4

Verdict: RUNTIME ERROR