Topic 1056: Level 2 C Language-Temperature Conversion

Enter a temperature in Fahrenheit and request the output in Celsius. The formula is

Keep to two decimal places

Sample input

-40.00

Sample output

-40.00

This question is very simple, just plug the data into the formula. Remember to set the floating point type of double or float--"for retaining two decimal places.

For decimals:

1 is that you can use iomanip's cout<< fixed << setprecision (2) <<C<<endl;, 2 is that you can use printf("%.2f",C) in C language; f specifically represents floating point type For data, ".2" means keeping two decimal places

#include<iostream>
#include<iomanip>  //专门保留小数的头文件
using namespace std;


//温度转换
int main() {
	double F, C;
	cin >> F;
	C = 5 / 9.0 * (F - 32);
	cout << fixed <<setprecision(2) << C << endl;
	//printf("%.2f",C);

	return 0;
}