Passing pointer to a function in C
By: Emiley J in C Tutorials on 2010-04-16
This sample program in C demonstrates the concept of passing a pointer as a parameter to a function. In this program, the function "prompt" accepts two pointers. The second parameter (num) is a pointer to the variable i. Since it is a pointer, the function does not return the value. The value is stored in i itself.
#include <stdio.h> void prompt(char *msg, int *num); int main(void) { int i; prompt("Enter a num: ", &i); printf("Your number is: %d", i); return 0; } void prompt(char *msg, int *num) { printf(msg); scanf("%d", num); }
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