If you want to print a single character on standard output, you can use
the putchar function. It takes a single integer parameter
containing a character (the argument can be a single-quoted text
character, as in the example below), and sends the character to
stdout. If a write error occurs, putchar returns
EOF; otherwise, it returns the integer it was passed. This can
simply be disregarded, as in the example below.
Here is a short code example that makes use of putchar. It
prints an X, a space, and then a line of ten exclamation marks
(!!!!!!!!!!) on the screen, then outputs a newline so that the
next shell prompt will not occur on the same line. Notice the use of
the for loop; by this means, putchar can be used not just
for one character, but multiple times.
#include <stdio.h>
int main()
{
int i;
putchar ('X');
putchar (' ');
for (i=1; i<=10; i++)
{
putchar ('!');
}
putchar ('\n');
return 0;
}
