Question

name the function which is used to swap the values of two memory locations using third variable​

Answer 1

The idea is simple

Assign x to a temp variable : temp = x
Assign y to x : x = y
Assign temp to y : y = temp
Let us understand with an example.

x = 100, y = 200

After line 1: temp = x
temp = 100

After line 2: x = y
x = 200

After line 3 : y = temp
y = 100


int main()
{

int x, y;

printf("Enter Value of x ");

scanf("%d", &x);

printf("\nEnter Value of y ");

scanf("%d", &y);



int temp = x;

x = y;

y = temp;



printf("\nAfter Swapping: x = %d, y = %d", x, y);

return 0;
}
Output:

Enter Value of x 12

Enter Value of y 14

After Swapping: x = 14, y = 12



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