c++ - Padding with spaces in char array -


I am writing a program to write a head for a specific image format. This image format requires 256 characters as its header before any of the following raw image data. But I have trouble emptying the empty space to create a title of 256 characters.

Below is an abstract of my problem: 

  four pads [256]; Sprintf (Pad, "Header Info:% s =% f", "Scale", 2.3); Cout & lt; & Lt; Pad & lt; & Lt; "Data here" & lt; & Lt; Endl;   
 The output is:  
  header information: scale = 2.300000 data here   
 However, the result is expected as I Header information: Scale = 2.300000 data here   
 Where "data here" appears after 256 characters from the beginning of the file.  How do I change the program to pad the blank space in the character array?   
 
 
 Do this:  
  Cust & lt; & Lt; Setup (256) & lt; & Lt; Left & lt; & Lt; Pad & lt; & Lt; "Data here" & lt; & Lt; Endl;   
 You will see  #include & lt; iomanip & gt;  may be required.  
 In your "real code" BTW you  snprintf  to ensure that there is no chance of buffer overflow, assuming that your % s  Some logic that is used on runtime (or preferably replace  sprintf  with stringstream).

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