我试图将一个函数确定的值传递给它之后的另一个函数。本质上:函数1确定一个值,比方说x。然后,将X传递到另一个专门将X显示为文本的函数。它在一个单独的函数中,供其他也可以确定X值的函数使用。但是,我只得到0而不是变量x。怎么了?
float fahToCel(int userInput)
{
float result = 0;
do
{
printf("\nPlease input your number in Fahrenheit units:");
scanf("%d", &userInput);
} while (result = 0);
result = (float)(((float)5.0f / (float)9.0f) * (float)(userInput - 32));
return result;
}
float celToFah(int userInput){
float result = 0;
do
{
printf("\nPlease input your number in Celcius units:");
scanf("%d", &userInput);
} while (result = 0);
result = (float)(((float)9.0f / (float)5.0f) * (float)(userInput + 32));
return result;
}
float displayResult(float result) {
printf("\nThe equivalent tempature is: %f\n", result);
return result;
}
void inputInformation() {
printf("1. Convert temperature input from the user in degrees Fahrenheit to
degrees Celsius.\n");
printf("2. Convert temperature input from the user in degrees Celsius to
degrees Fahrenheit.\n");
printf("3. Quit.\n ");
}
int main()
{
int menuChoice = 0;
int userInput = 0;
int result = 0;
while (1)
{
inputInformation();
printf("Please make a selection now:");
scanf("%d", &menuChoice);
switch (menuChoice)
{
case 1:
fahToCel(userInput);
displayResult(result);
break;
case 2:
celToFah(userInput);
displayResult(result);
break;
case 3:
return 0;
default:
printf("\nThat is not a choice!\n");
break;
}
}
}
答案 0 :(得分:3)
您永远不会将结果分配给result
。更改如下:
result = fahToCel(userInput);
displayResult(result);