75 lines
1.7 KiB
C++
75 lines
1.7 KiB
C++
#include <iostream>
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using namespace std;
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// 函数声明
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void qian1(); // 千位计算
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void shi11(); // 十位计算
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void bai1(); // 百位计算
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int main() {
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int in;
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cout << "1.千位 2.十位 3.百位" << endl;
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cin >> in;
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// 使用 '==' 进行条件判断
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if (in == 1) {
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qian1();
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} else if (in == 2) {
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shi11();
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} else if (in == 3) {
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bai1();
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} else {
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cout << "无效输入，请输入1、2或3。" << endl; // 处理无效输入
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}
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return 0; // 返回0表示程序正常结束
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}
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void qian1() {
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cout << "现在是千数计算" << endl;
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int number1, ge1, shi1, bai1, qian1;
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cout << "请输入一个四位数: ";
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cin >> number1;
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// 计算各位数字
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ge1 = number1 % 10;
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shi1 = (number1 / 10) % 10;
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bai1 = (number1 / 100) % 10;
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qian1 = number1 / 1000;
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// 重新组合数字
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number1 = ge1 * 1000 + shi1 * 100 + bai1 * 10 + qian1;
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cout << "重新组合后的数字是: " << number1 << endl;
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}
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void shi11() {
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cout << "现在是十数计算" << endl;
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int number, ge, shi;
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cout << "请输入一个两位数: ";
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cin >> number;
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// 计算各位数字
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ge = number % 10;
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shi = number / 10;
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// 重新组合数字
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number = ge * 10 + shi;
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cout << "重新组合后的数字是: " << number << endl;
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}
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void bai1() {
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cout << "现在是百数计算" << endl;
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int number, ge, shi, bai;
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cout << "请输入一个三位数: ";
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cin >> number;
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// 计算各位数字
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ge = number % 10;
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shi = (number / 10) % 10;
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bai = number / 100;
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// 重新组合数字
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number = ge * 100 + shi * 10 + bai;
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cout << "重新组合后的数字是: " << number << endl;
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}
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