Week 2 Lecture - Functions - Valid Triangle

Question

This is from the functions lecture on a valid triangle. I'm not getting any error messages but I can't figure out why the

bool valid_triangle (float x, float y, float z)

function is not working. Any help would be appreciated. Thank you.

'''

#include <stdio.h>
#include <cs50.h>

// declare functions
bool valid_triangle (float x, float y, float z);

int main(void)
{
    // ask user for input
    printf("Give me the first side of the triangle:\n ");
        float x = get_float("");
    printf("Give me the second side of the triangle:\n ");
        float y = get_float("");
    printf("Give me the third side of the triangle:\n ");
        float z = get_float("");
}


bool valid_triangle (float x, float y, float z)
{
    // check that all sides are positive
    if (x <= 0 || y <= 0 || z <= 0)
    {
        return false;
    }

    // check that sum of any two sides is greater than the third
    if ((x + y <= z) || (x + z <= y) || (y + z <= x))
    {
        return false;
    }

    // if both tests are passed, we have a triangle
    return true;
}

Answer 1

Just like the function printf, the valid_triangle function has to be called from within main in order to execute and produce results.