Question

我已创建此程序将华氏温度转换为摄氏温度，反之亦然现在我想将此if语句转换为switch语句，有人可以帮我完成该任务。

int main(void) {

char condition; // Declare a variable.
float celsius, fahrenheit, temp;

printf("Enter Temp in either Celsius or Fahrenheit: \n"); scanf("%f", &temp); //Ask user to enter Temp.

printf("What type of conversion you want? (hint: 'C/c' for Celsius or 'F/f' for Fahrenheit) \n"); scanf(" %c", &condition);
if ( condition == 'f' || condition == 'F' ) {

    fahrenheit = ( temp * 1.8 ) + 32; //Calculates temp in Fahrenheit.

    printf("The temp in Fahrenheit is: %.2f", fahrenheit); //Displays result.

} else if ( condition == 'c' || condition == 'C' ) {

    celsius = ( temp - 32 ) / 1.8; //Calculate temp in Celsius.

    printf("The temp in Celsius is: %.2f",  celsius); //Displays result.
    }
}

Answer 1

switch(condition){
case 'f':case'F':
  //block
  break;
case 'c':case'C':
  //block
  break;
default:
  //error
}

Answer 2

switch(condition){
    case 'f': 
    case 'F':
        fahrenheit = ( temp * 1.8 ) + 32;
        printf("The temp in Fahrenheit is: %.2f", fahrenheit);
        break;

    case 'c':
    case 'C':
        celsius = ( temp - 32 ) / 1.8;
        printf("The temp in Celsius is: %.2f",  celsius);      
        break;     
}

Answer 3

这样的事情会起作用

switch( condition ) 
{
    case 'c':
    case 'C':
        fahrenheit = ( temp * 1.8 ) + 32; //Calculates temp in Fahrenheit.
        printf("The temp in Fahrenheit is: %.2f", fahrenheit); //Displays result.
        break;
    case 'f':
    case 'F':
        celsius = ( temp - 32 ) / 1.8; //Calculate temp in Celsius.
        printf("The temp in Celsius is: %.2f",  celsius); //Displays result.
}

Answer 4

试试这个：

switch(condition)
{
    case 'f':
    case 'F': 
               fahrenheit = ( temp * 1.8 ) + 32; //Calculates temp in Fahrenheit.
               printf("The temp in Fahrenheit is: %.2f", fahrenheit); //Displays result.
               break;
    case 'c':
    case 'C': 
               celsius = ( temp - 32 ) / 1.8; //Calculate temp in Celsius.
               printf("The temp in Celsius is: %.2f",  celsius); //Displays result.
               break;
    default: break;
}

背后的逻辑：控制流程一直持续到检测到break语句为止。因此，即使condition='f'，也可以使用＆＃39; F＆＃39;将被执行然后打破。 c和C的情况也是如此。

在C中更改switch语句的代码？

4 个答案: