Structures and Functions in C

Structures and functions in C; In this tutorial, i am going to show you 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 in C

  • 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);
}

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