convert integer into proper decimal format

[jesson85k]

how can i convert integer such as 1000 into 1,000.00 or 3031 into 3,031.00?
thanx.

[Gz64jE8b]

#include <iostream>

using namespace std;

int main()
{
    int a = 100;
    cout << (double)a / 17;
    system("pause");
    return 0;
    
}

[Undeclared]

You can use this:
add #include<iomanip>

cout<<fixed<<showpoint<<setprecision(2);
cout<<integer<<endl;

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