4-12(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-men-women;
        if(men*3+women*2+child*0.5==45)
            printf("men=%d,women=%d,child=%d\n",men,women,child);
    }
    return 0;
}