How to pass the address of structure as an argument to function in C language?

Passing the address of structure as an argument to function −

• The Address of the structure is passed as an argument to the function.

• It is collected in a pointer to structure in function header.

Advantages

• No wastage of memory as there is no need of creating a copy again

• No need of returning the values back as the function can access indirectly the entire structure and work on it.

Example

#include<stdio.h> struct date{    int day;    int mon;    int yr; }; main (){    struct date d= {02,01,2010};    display (&d);    getch (); } display (struct date *dt){    printf("day = %d
", dt->day);    printf("month = %d
",dt->mon);    printf("Year = %d",dt->yr); }

Output

day = 2 month = 1 Year = 2010