#include <stdio.h>
#include <math.h>
int main() {
float num1, num2, result;
char op;
printf("Enter first number: ");
scanf("%f", &num1);
printf("Enter operator (+, -, *, /, ^, sqrt): ");
scanf(" %c", &op);
if (op == '+' || op == '-' || op == '*' || op == '/') {
printf("Enter second number: ");
scanf("%f", &num2);
}
switch (op) {
case '+':
result = num1 + num2;
printf("%.2f + %.2f = %.2f", num1, num2, result);
break;
case '-':
result = num1 - num2;
printf("%.2f - %.2f = %.2f", num1, num2, result);
break;
case '*':
result = num1 * num2;
printf("%.2f * %.2f = %.2f", num1, num2, result);
break;
case '/':
if (num2 == 0) {
printf("Error: Division by zero");
} else {
result = num1 / num2;
printf("%.2f / %.2f = %.2f", num1, num2, result);
}
break;
case '^':
result = pow(num1, num2);
printf("%.2f ^ %.2f = %.2f", num1, num2, result);
break;
case 'sqrt':
result = sqrt(num1);
printf("sqrt(%.2f) = %.2f", num1, result);
break;
default:
printf("Error: Invalid operator");
break;
}
return 0;
}
程序使用了標準的C庫函數,包括stdio.h和math.h。它可以處理加減乘除、乘方和開方的基本計算。您可以根據您的具體需求進行修改和優化 |
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