C 语言实例 – 实现简单的计算器 |
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C 语言实例 - 实现简单的计算器
C 语言实例 实现加减乘除计算。 实例 # include int main() { char operator; double firstNumber,secondNumber; printf("输入操作符 (+, -, *, /): "); scanf("%c", &operator); printf("输入两个数字: "); scanf("%lf %lf",&firstNumber, &secondNumber); switch(operator) { case '+': printf("%.1lf + %.1lf = %.1lf",firstNumber, secondNumber, firstNumber + secondNumber); break; case '-': printf("%.1lf - %.1lf = %.1lf",firstNumber, secondNumber, firstNumber - secondNumber); break; case '*': printf("%.1lf * %.1lf = %.1lf",firstNumber, secondNumber, firstNumber * secondNumber); break; case '/': printf("%.1lf / %.1lf = %.1lf",firstNumber, secondNumber, firstNumber / secondNumber); break; // operator doesn't match any case constant (+, -, *, /) default: printf("Error! operator is not correct"); } return 0; }输出结果为: 输入操作符 (+, -, *, /): * 输入两个数字: 4 5 4.0 * 5.0 = 20.0C 语言实例 |
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