Structures and Functions in C

Structures and functions in C programming; Through this tutorial, you will learn how to pass struct variables as arguments to a function. And as well as learn how to return struct from a function with the help of examples.

Structures and Functions

• Passing Structure Members To Functions in C Program
• Passing The Entire Structure To Functions in C Program

Passing Structure Members To Functions in C Program

See the following c program to pass structures to a function; as shown below:

#include <stdio.h>
struct student {
   char name[50];
   int age;
};

// function prototype
void display(struct student s);

int main() {
   struct student s1;

   printf("Enter name: ");

   // read string input from the user until \n is entered
   // \n is discarded
   scanf("%[^\n]%*c", s1.name);

   printf("Enter age: ");
   scanf("%d", &s1.age);

   display(s1); // passing struct as an argument

   return 0;
}

void display(struct student s) {
   printf("\nDisplaying information\n");
   printf("Name: %s", s.name);
   printf("\nAge: %d", s.age);
}

Passing The Entire Structure To Functions in C Program

See the following c program to pass entire structures to a functions; as shown below:

#include <stdio.h>
//structures declaration
typedef struct {
    int a, b;
    int c;
}sum;
void add(sum) ;     //function declaration with struct type sum
int main()
{
sum s1;
printf("Enter the value of a : ");
scanf("%d",&s1.a);
printf("\nEnter the value of b : ");
scanf("%d",&s1.b);
add(s1);     //passing entire structure as an argument to function
return 0;
}
//Function Definition
void add(sum s)
{
int sum1;
sum1 = s.a + s.b;
printf("\nThe sum of two values are :%d ", sum1);
}