Define and write syntax of putchar()

putchar() is an unformatted output function that writes a single character to the screen (standard output). It is declared in <stdio.h>.

Syntax: putchar(character);

The argument is a character constant, a char variable, or an integer ASCII code. It returns the character written.

#include <stdio.h>
int main(void)
{
    char ch = 'N';
    putchar(ch);
    putchar('e');
    putchar(65);     /* prints A */
    putchar('\n');
    return 0;
}

Output (65 is the ASCII code of A):

NeA