最大公约数；凑硬币；平均数

#define _CRT_SECURE_NO_WARNINGS 1 #include <stdio.h> //接力break和goto语句 //用1角，2角，5角硬币凑出x元 //int main() //{ // int x = 0; // int exit = 0; // printf("请输入你想要凑出的元数："); // scanf("%d", &x); // for (int one = 0;one<x*10; one++) // { // for (int two = 0; two < x * 5; two++) // { // for (int five = 0; five < x * 2; five++) // { // if (one + two * 2 + five * 5 == x * 10) // { // printf("%d个1角，%d个2角，%d个5角可以得到%d元\n", one, two, five, x); // exit = 1; // break; // } // } // if (exit)break; // } // if (exit)break; // } // return 0; //} int main() { int x = 0; printf("请输入你想要凑出的元数："); scanf("%d", &x); for (int one = 0; one < x * 10; one++) { for (int two = 0; two < x * 5; two++) { for (int five = 0; five < x * 2; five++) { if (one + two * 2 + five * 5 == x * 10) { printf("%d个1角，%d个2角，%d个5角可以得到%d元\n", one, two, five, x); goto out; } } } } out: return 0; }