Complete the sorting of three numbers from small to big: Code: #include <stdio.h> #include <stdlib.h> void Exchg(int *px, int *py) { int tmp; tmp = *px; *px = *py; *py = tmp; } int main(int argc, char *argv[]) { int x,y,z,t; while(scanf("%d%d%d",&x,&y,&z)) { if(x > y) Exchg(&x,&y); /*change x,y*/ if(x > z) Exchg(&x,&z); /*change x,z*/ if(y > z) Exchg(&y,&z); /*change z,y*/ printf("small to big: %d %d %d\n",x,y,z); } system("PAUSE"); return 0; } compile successfully in dev c++
You don't use variable t, while looks like an infinite loop, swapping is ok. If you want to sort a few numbers, you may use array or some ohter data structure and use some sorting algorithm.