/*换钱问题 一毛 两毛 五毛*/ #include<stdio.h> void main() { int x,y,z,i=0; for ( x=1; x<100; x++ ) for ( y=1; y<50; y++ ) for ( z=1; z<20; z++ ) if ( x+2*y+5*z==100 ) { i++; printf ( "第%d种:%d个1角 %d个2角 %d个5角\n ",i,x,y,z ); } printf ( "共有%d种换法!\n",i ); }