Computer Programming C Laboratory: Pointers C Programs

Write a C program to explain about call by value (Using Pointers and Functions)

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Using Pointers and Functions - C Programming

Write a C program to explain about call by value.

/* C Program to explain about call by value */

#include <stdio.h>

main()

{

int a=10, b=20;

printf("\n Before calling the function a&b is %d,%d", a,b);

void change(a,b); /* function call */

printf("\n After calling a&b is %d,%d", a,b);

} /* main */

void change(x,y) /* change is a function call with parameter */

int x,y;

{

x=x+5;

y=y+10;

}

printf ("In the function changes a&b is %d, %d",x,y);

}

OUTPUT

Before call the function a&b is 10,20

In the function changes a&b is 15,30

After calling a&b is 10,20

EXPLANATION: The variable a,b are referred as x,y in the function. Inside the function the values of the variables are added to constant value. But this changes will not affect in the main program after function calling.

Computer Programming C Laboratory: Pointers C Programs : Tag: C Programming : - Write a C program to explain about call by value (Using Pointers and Functions)

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Computer Programming C Laboratory: Pointers C Programs

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