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What is call by value in C language?
Pass by value or call by value are sent as arguments.
Algorithm
Refer to the algorithm for the call by value.
Step 1: Enter any 2 numbers at runtime Step 2: Read those two numbers from console Step 3: Call the function swap with arguments is a call by value Step 4: Go to called function swap(int a,int b) Step 5: Print the numbers after swap
Example
Following is the C program for the call by value −
#include<stdio.h>
void main(){
void swap(int,int);
int a,b;
clrscr();
printf("enter 2 numbers");
scanf("%d%d",&a,&b);
printf("Before swapping a=%d b=%d",a,b);
swap(a,b);
printf("after swapping a=%d, b=%d",a,b);
getch();
}
void swap(int a,int b){
int t;
t=a;
a=b;
b=t;
}Output
When the above program is executed, it produces the following result −
enter 2 numbers 10 20 Before swapping a=10 b=20 After swapping a=10 b=20
Updated on: 08-Mar-2021
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