Question

I have a pretty simple C++ console program. It’s working fine, but I have some issues.
I have 2 functions. First function called “input” asks from user to input numbers from 6 to 10. In that function I declared:

if ((a[i][j] < 6) || (a[i][j] > 10))
{
    cout<<"Invalid input!";
    return 0; 
}

Second function called “output”, prints out those numbers from first function.

In the main it is like:

int main ()
{
    ...
    input (matrix, number);
    output (matrix, nubmer);
}

My question is this. When I input number that isn’t 6-10, my program still do “output” function, so it prints some random numbers. How can I break whole program in exact time when input rules are broken? Without any random output and stuff, just to print “Invalid output”, then to start program from the start?

Answer 1

 if(input(matrix,number) != 0) output(matrix,number); 
 // You don't {} for a single instruction

This should fix your problem.