Function Return by Value or Address - C Function

Introduction

A variable may also be returned in by value or by address.

By default a function returns by value.

A copy of the value is returned to the caller.

Demo Code

#include <stdio.h>
int byVal(int i) { return i + 1; }

int main(void) {
  int a = 10;//from w w  w.ja v a2  s .com
  printf("%d", byVal(a)); /* "11" */
}

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Related Tutorials

• Use return statement to exit a function
• Returning from a Function
• Returning a Pointer from a Function
• Return by address normally returns an argument passed to the function by address.
• Using multiple return statements in a function.