#include
static int a = 5;
static int b = 6;
int add(int a,int b)
{
int c;
scanf("%d", &c);
if (a + b == c)
{
return 1;
}
return 0;
}
void output(int k)
{
if (k)
{
printf("Right!\n");
}
else
{
printf("Not correct! Try again!\n");
output(add(a, b));
}
}
void main()
{
printf("%d+%d=", a, b);
output(add(a, b));
}