Algorithm
Include Header File:
Include the standard input/output header file (#include <stdio.h>).
Function Prototype:
Declare a function prototype for cyclicSwap that takes three integer pointers as parameters.
Main Function:
Declare three integer variables a, b, and c.
Prompt the user to enter values for a, b, and c.
Display the initial values of a, b, and c.
Function Call:
Call the cyclicSwap function, passing the addresses of variables a, b, and c.
Display Swapped Values:
Display the values of a, b, and c after the cyclic swap operation.
Cyclic Swap Function:
Declare a function cyclicSwap that takes three integer pointers as parameters.
Use a temporary variable to swap the values in a cyclic order.
Update the values at the memory locations pointed to by the input pointers.
Return:
Return 0 to indicate successful completion of the program.
Code Examples
#1 Code Example-C Programing to Swap Elements Using Call by Reference
Code -
C Programming
#include <stdio.h>
void cyclicSwap(int *a, int *b, int *c);
int main() {
int a, b, c;
printf("Enter a, b and c respectively: ");
scanf("%d %d %d", &a, &b, &c);
printf("Value before swapping:\n");
printf("a = %d \nb = %d \nc = %d\n", a, b, c);
cyclicSwap(&a, &b, &c);
printf("Value after swapping:\n");
printf("a = %d \nb = %d \nc = %d", a, b, c);
return 0;
}
void cyclicSwap(int *n1, int *n2, int *n3) {
int temp;
// swapping in cyclic order
temp = *n2;
*n2 = *n1;
*n1 = *n3;
*n3 = temp;
}
Output
2
3
Value before swapping:
a = 1
b = 2
c = 3
Value after swapping:
a = 3
b = 1
c = 2
Demonstration
C Programing Example Swap Numbers in Cyclic Order Using Call by Reference-DevsEnv