what is the error in this program? it always shows no output, but no compilation error

Question

#include <iostream>
#define pi 3.14159
using namespace std;
float power(float, int);
int factorial(int);
int main()
{
int b, i;
float a, callOF1, callOF2;
float sum = 0;
cin >> a;
cin >> b;
cout << a;
a *=(pi/180);
cout << a;
for (i = 0; i <= b; i++)
{
callOF1 = power(a, b);
callOF2 = factorial(b);
sum = sum + (callOF1 / callOF2);
}
cout << sum;
return 0;
}
float power(float x, int n)
{
if (n == 0)
return 1;
else
return (x * power(x, (n - 1)));
}
int factorial(int n)
{
if (n == 1 && n == 0)
return 1;
else
return (n * factorial(n - 1));
}

Answer 1

The problem might be in the line if (n == 1 && n == 0). n can't be 1 and 0 at the same time so that condition will never be true and you're creating an infinite loop. Try to change it from && to ||.

/Kirk Schafer Did you try to make him find the error by himself? If so, I'm sorry 😩

Answer 2

These are often caused by some kind of segmentation fault or hang.

To diagnose a problem like this, you could try commenting code to check for problems.

For example, why does the code show output again if I comment line
19: callOF2 = factorial(b);

Answer 3

Anna I regularly drop hints for "the old one-two", d.h. follow-up combos. It increases the learning pool + my timezone's different + what if someone's still stuck? All's well :)

Answer 4

thanks ya all

Answer 5

Adarsh K Please also check your return type. ;)

Answer 6

everything is fine. once again thanks buddy