趣味編程100第二題

#include <stdio.h> int main() { int a,b,c; int i=0; for(a=1;a<=5;a++) for(b=1;b<=5;b++) for(c=1;c<=5;c++) if(a != b && a != c && b != c) { printf("A:%2d,B:%2d,C:%2d\n",a,b,c); i++; } printf("There are %d ways",i);     return 0; }