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iOS

Posted by Ron Gootman
Ron Gootman
24,409 Points

I need some explanation regarding this code...

I am trying to understand better the fundamentals of Objective-C, so I am currently learning from Aaron Hillegrass and Mikey Ward's "Objective-C Programming The Big Nerd Ranch Guide".

Currently covering the return in a function. Here is my code:

#include <stdio.h>

float fahrenheitFromCelsius(float cel)
{
    float fahr = cel * 1.8 + 32.0;
    printf("%f Celsius is %f Fahrenheit.\n",cel, fahr);
    return fahr;
}

int main(int argc, const char * argv[]) {
    float freezeInC = 0;
    float freezeInF = fahrenheitFromCelsius(freezeInC);
    printf("Water freezes at %f degrees Fahrenheit. \n",freezeInF);
}

The output is: "0.000000 Celsius is 32.000000 Fahrenheit. Water freezes at 32.000000 degrees Fahrenheit. Program ended with exit code: 0"

My question is when freezeInC is assigned to 0, how does it connect to the cel value in the fahrenheitFromCelsius Function.

In short, what is the connection between feezeInC to cel?