swap two numbers in c
#include <stdio.h>
int main() {
double a, b;
printf("Enter a: ");
scanf("%lf", &a);
printf("Enter b: ");
scanf("%lf", &b);
// Swapping
// a = (initial_a - initial_b)
a = a - b;
// b = (initial_a - initial_b) + initial_b = initial_a
b = a + b;
// a = initial_a - (initial_a - initial_b) = initial_b
a = b - a;
printf("After swapping, a = %.2lf\n", a);
printf("After swapping, b = %.2lf", b);
return 0;
}c program for swapping of two numbers using temporary variable
#include <stdio.h>
int main()
{
int a, b, temp;
printf("enter the values of a and b: \n");
scanf("%d%d", &a, &b );
printf("current values are:\n a=%d\n b=%d\n", a, b);
temp=a;
a=b;
b=temp;
printf("After swapping:\n a=%d\n b=%d\n", a, b);
}how to swap values in variables in c
#include <stdio.h>
#include <stdlib.h>
int main()
{
//initialize variables
int num1 = 10;
int num2 = 9;
int tmp;
//create the variables needed to store the address of the variables
//that we want to swap values
int *p_num1 = &num1;
int *p_num2 = &num2;
//print what the values are before the swap
printf("num1: %i\n", num1);
printf("num2: %i\n", num2);
//store one of the variables in tmp so we can access it later
//gives the value we stored in another variable the new value
//give the other variable the value of tmp
tmp = num1;
*p_num1 = num2;
*p_num2 = tmp;
//print the values after swap has occured
printf("num1: %i\n", num1);
printf("num2: %i\n", num2);
return 0;
}swap two var c
#include <stdio.h>
int main()
{
int a = 10;
int b = 5;
//swap start
a = a + b; //a = 10 + 5 = 15
b = a - b; //b = 15 - 5 = 5
a = a - b; //a = 15 - 5 = 10
printf("a = %d / b = %d\n", a, b);
//a = 5 / b = 10
return 0;
}
/*You can create a function*/
void swap(int *a, int *b)
{
*a = *a + *b; //a = 10 + 5 = 15
*b = *a - *b; //b = 15 - 5 = 5
*a = *a - *b; //a = 15 - 5 = 10
}
int main()
{
int a = 10;
int b = 5;
//call with adress of the var
swap(&a, &b);
printf("a = %d / b = %d\n", a, b);
//a = 5 / b = 10
return 0;
}Copyright © 2021 Codeinu
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