Beginner has a question about the Main( ) function 1

[Rmcta]

I read that I can put the main()function wherever I want in my C program and that if I create other functions in my program, main() will always execute first.

What I don't understand then is how the following code works. If the program starts executing the main()function, how can we reference something (integer_test) that has not been read yet?
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#include <stdio.h>
int integer_test(int a, int b)
{
int total;
total = a + b;
return total;
}

int main()
sum = integer_test(2,14);
printf("The addition of 2 and 14 is %d\n", sum);
return 0;
}

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[chipperMDW]

Sure it's been read. Just because it starts executing in main doesn't mean it hasn't read the other stuff.

If you make a typo in [tt]integer_test[/tt] and try to compile it, doesn't the compiler notice it and complain? That's where the compiler reads it.

 

[Rmcta]

I see! thank you very much.
It's clear now.