53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
#include <iostream>
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using namespace std;
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int main()
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{
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char buf[10] = { 0 };
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double num1, num2, tmp;
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int code;
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while(1)
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{
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system("cls");
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cout << "输入1我将为你计算两个数相加\n";
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cout << "输入2我将为你计算两个数相减\n";
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cout << "输入3我将为你计算两个数相乘\n";
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cout << "输入4我将为你计算两个数相除\n";
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cout << "输入其他本系统退出\n";
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cin >> tmp;
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code = tmp;
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if (code > 0 && code < 5)
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{
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cout << "请输入第一个数\n";
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cin >> num1;
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cout << "请输入第二个数\n";
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cin >> num2;
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}
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switch (code)
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{
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case 1:
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printf_s("%g+%g=%g\n", num1, num2, num1 + num2);
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break;
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case 2:
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printf_s("%g-%g=%g\n", num1, num2, num1 - num2);
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break;
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case 3:
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printf_s("%g*%g=%g\n", num1, num2, num1 * num2);
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break;
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case 4:
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printf_s("%g/%g=%g\n", num1, num2, num1 / num2);
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break;
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default:
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return 0;
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break;
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}
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cout << "按1键继续,否则退出程序\n";
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cin >> code;
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if (code != 1)
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{
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return 0;
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}
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}
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}
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