Formats sprintf, fprintf, and fscanf need a format string. Ordinary characters include the normal alphanumeric characters, and escape characters.
Single quotes enclose the format string.
Printing arrays without for loops. If A has 10 rows and 2 columns, the 10 elements in column 1 are printed before the elements in column 2 are printed. Thus, each column of A will have only 2 values. For more information about format strings , refer to the printf and fprintf routines in a C language reference manual.