How to test input is sane

Question

Consider the following simple C program.

//C test

#include

int main()
{
   int a, b, c;

   printf(\"Enter two numbers to add\\n\");
   scan         


        

Answer 1

you can test this one.

#include 

int main(void)
{
    int a, b, c;

    printf("Enter two numbers to add\n");
    scanf("%d%d",&a,&b);

    if(scanf("%d%d",&a,&b) == 2)
    {
        c = a + b;
        printf("Sum of entered numbers = %d\n",c);
    }
    return 0;
}