#import <Foundation/Foundation.h>
int main(int argc, const char * argv[])
{
@autoreleasepool {
// insert code here...
NSLog(@"Hello, World!");
Boolean flag = true;
while (flag){
char a;
float number1,number2,result = 0;
printf("a表示加法\n ");
printf("b表示減法\n ");
printf("c表示乘法\n ");
printf("d表示除法\n ");
printf("q表示退出\n ");
printf("請輸入您的選擇:\n ");
scanf("%c",&a);
switch (a) {
case 'a':
printf("請輸入第一個數：\n");
scanf("%f",&number1);
printf("請輸入第二個數：\n");
scanf("%f",&number2);
result = number1 + number2;
printf("%.1f\n",result);
break;
case 'b':
printf("請輸入第一個數：\n");
scanf("%f",&number1);
printf("請輸入第二個數：\n");
scanf("%f",&number2);
result = number1 - number2;
printf(" %.1f\n",result);
break;
case 'c':
printf("請輸入第一個數：\n");
scanf("%f",&number1);
printf("請輸入第二個數：\n");
scanf("%f",&number2);
result = number1 * number2;
printf("%.1f\n",result);
break;
case 'd':
printf("請輸入第一個數：\n");
scanf("%f",&number1);
printf("請輸入第二個數：\n");
scanf("%f",&number2);
result = number1 / number2;
printf("%.1f\n",result);
break;
case 'q':
flag = false;
printf("已經退出");
break;
default:
break;
}
}
}
return 0;
}
