Pass by reference in C

Question

I\'m trying to use pass by reference in C so that the function can modify the values of the parameters passed to it. This is the function signature:

int loc         


        

Answer 1

If you wish to use pass by reference method to modify a parameter used in function call, always use pointers as formal arguments of function.

Hence instead of using this

int locate(char *name, int &s, int &i)

use,

int locate(char *name, int *s, int *i)

When you will call this function, you may use

.........

int a=5;
int d=10;
char c='A'; 
int result;

result=locate(&c, &a, &d);

I hope all would be clear now,

For more idea about passing by value or passing by reference and which one is better, this source is good for beginners

http://www.learnc.net/call-by-reference.php

Have fun.