例4-12

程序1                 #include<stdio.h> int main(void) {  int child,men,women;

 for(men=0;men<=45;men++)   for(women=0;women<=45;women++)    for(child=0;child<=45;child++)     if(men+women+child==45&&men*3+women*2+child*0.5==45)      printf("men=%d,women=%d,child=%d\n",men,women,child);    return 0;

}

程序2

#include<stdio.h> int main(void) {  int child,women,men;

 for(men=0;men<=15;men++)   for(women=0;women<=22;women++){    child=45-women-men;    if(men*3+women*2+child*0.5==45)     printf("men=%d,women=%d,child=%d\n",men,women,child);   }  return 0; }