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I have two functions, one which produces messages like Starting initialization... and another which checks return codes and outputs "Ok", "Warning" or "Error". However, the output that is produced is of the different length:
Starting initialization...Ok. Checking init scripts...Ok. How can I get something like the following?
Starting initialization... Ok. Checking init scripts... Ok. 
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C++ printf is a formatting function that is used to print a string to stdout. The basic idea to call printf in C++ is to provide a string of characters that need to be printed as it is in the program. The printf in C++ also contains a format specifier that is replaced by the actual value during execution.
%s tells printf that the corresponding argument is to be treated as a string (in C terms, a 0-terminated sequence of char ); the type of the corresponding argument must be char * . %d tells printf that the corresponding argument is to be treated as an integer value; the type of the corresponding argument must be int .
%s and string We can print the string using %s format specifier in printf function. It will print the string from the given starting address to the null '\0' character. String name itself the starting address of the string. So, if we give string name it will print the entire string.
You can specify a width on string fields, e.g.
printf("%-20s", "initialization..."); And then whatever's printed with that field will be blank-padded to the width you indicate.
The - left-justifies your text in that field.
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