Question

Hi need to design a programm in C++ which reset the output format,i.e Display the number of floating point numbers in the fixed point format according to the system default format. First the Input should be the number of test cases, and then input the test cases.

For example:

Input:

4 //number of test cases
2123.324423
2123.324423
2123.324423
123.0000

Output:

2123.32
2123.324423
2123.32
2123.324423
2123.32
2123.324423
123
123.000000

Answer 1

#include<bits/stdc++.h>
using namespace std;
int main()
{
int n;
cin>>n;
while(n--){
  
double f;
cin>>f;
int t=0;
if(f==(double)(int)f){
t=1;
  
}
  
if(t==0)
{
cout << fixed << setprecision(2) <<f<<"\n";
cout << fixed << setprecision(6) <<f<<"\n";
}
else
{
cout << fixed << setprecision(0) <<f<<"\n";
cout << fixed << setprecision(6) <<f<<"\n";
}
}
}