[Solved] (Function) Swaping two numbers in c

by


I think you need something like this:

// Make sure x is smaller than y
if(x>y)
{
    swap(&x, &y);
}

// Make sure x is smaller than z
if(x>z)
{
    swap(&x, &z);                      
} 
// Now x is smaller than both y and z

// Make sure y is smaller than z
if(y>z)
{
    swap(&y, &z);
}

So the full program would look:

#include <stdio.h>

void swap(int *px, int *py)
{
    int temp;
    temp = *px;
    *px = *py;
    *py = temp;
}
int main(void)
{
    int x,y,z;
    x=10;
    y=-1;
    z=5;

    printf("x=%d y=%d z=%d\n",x,y,z);

    // Make sure x is smaller than y
    if(x>y)
    {
        swap(&x, &y);
    }

    // Make sure x is smaller than z
    if(x>z)
    {
        swap(&x, &z);                      
    } 
    // Now x is smaller than both y and z

    // Make sure y is smaller than z
    if(y>z)
    {
        swap(&y, &z);
    }

    printf("x=%d y=%d z=%d",x,y,z);

    return 0;
}

The output is:

x=10 y=-1 z=5

x=-1 y=5 z=10

3

solved (Function) Swaping two numbers in c