Answer Posted / santhi perumal

sprintf: This Writes formatted data to a character string in
memory instead of stdout

Syntax of sprintf is:

#include <stdio.h>
int sprintf (char *string, const char *format
[,item [,item]...]);

Here

String refers to the pointer to a buffer in memory where the
data is to be written. Format refers to pointer to a
character string defining the format. Each item is a
variable or expression specifying the data to write.

The value returned by sprintf is greater than or equal to
zero if the operation is successful or in other words the
number of characters written, not counting the terminating
null character is returned. And return a value less than
zero if an error occurred.

printf: Prints to stdout

Syntax for printf is:

printf format [argument]...

The only difference between sprintf() and printf() is that
sprintf() writes data into a character array, while printf()
writes data to stdout, the standard output device.

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