Syntax

#include <stdio.h>
int putc(int c, FILE *stream);
int putchar(int c);

putc converts c to unsigned char and then writes c to the output stream at the current position. putchar is equivalent to putc(c, stdout).

putc is equivalent to fputc except that, if it is implemented as a macro, putc can evaluate stream more than once. Therefore, the stream argument to putc should not be an expression with side effects.

putc and putchar return the value written. A return value of EOF indicates an error.

This example writes the contents of a buffer to a data stream. In this example, the body of the for statement is null because the example carries out the writing operation in the test expression.

#include <stdio.h>

#define  LENGTH        80

int main(void)
{
   FILE *stream = stdout;
   int i,ch;
   char buffer[LENGTH+1] = "Hello world";

    /* This could be replaced by using the fwrite routine                     */

   for (i = 0; (i < sizeof(buffer)) && ((ch = putc(buffer[i], stream)) != EOF);
      ++i)
      ;
   return 0;

   /****************************************************************************
      The output should be:

      Hello world
   ****************************************************************************/
}

• fputc
  
• fwrite
  
• getc - getchar
  
• putch
  
• puts
  
• write

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