decimal??

This is a discussion on decimal?? within the C++ Programming forums, part of the General Programming Boards category; Hi there i don't get this using cout and printf here's the code Code: #include <iostream> #include <stdio.h> #include <iomanip> ...

  1. #1
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    decimal??

    Hi there i don't get this using cout and printf here's the code

    Code:
    #include <iostream>
    #include <stdio.h>
    #include <iomanip>
    #include <conio.h>
    
    using namespace std;
    
    int main(void)
    {
        float num;
        
        printf("input number: \n");
        scanf("%f", &num);
        printf("The number is: %.2f\n", num);
        cout << setprecision (4) << "The number is: " << num << endl;
        getch();
    
        
    }
    why when using printf you can easily change the decimal places but why in cout??? for example i input number 11.50 the output goes like this.
    Code:
    The number is 11.50 <--------------------------- using printf.
    The number is 11.5    <--------------------------using cout.
    why is that? cout can't print the last zero even if i use <iomanip>?
    any idea there? thanks

  2. #2
    ZuK
    ZuK is offline
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    guess what you want is
    Code:
        printf("The number is: %.2f\n", num);
        cout <<"The number is: " << setprecision(2) << fixed <<  num << endl;
    Kurt

  3. #3
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    Thank you very much mate, i really appreciate your help....

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