Can the putchar function output a character to the terminal?

The putchar function can output a character to the terminal. The putchar function is a C library function that writes the characters specified by the char parameter to the standard output. The putchar function declaration: [int putchar(int char)], where the parameter char is the character to be written.

The putchar function can output a character to the terminal. It is one of the C language functions.

(Recommended learning: C language tutorial)

Function introduction:

C library function int putchar(int char) puts the character specified by the parameter char (an unsigned character) is written to standard output stdout.

Function declaration:

int putchar(int char)

char -- This is the character to be written. The character is passed with its corresponding int value.

Return value:

This function returns the written character as an unsigned char cast to int, or EOF if an error occurs.

Code example:

#include <stdio.h>
int main ()
{
   char ch;

   for(ch = &#39;A&#39; ; ch <= &#39;Z&#39; ; ch++) {
      putchar(ch);
   }
   
   return(0);
}

Result:

ABCDEFGHIJKLMNOPQRSTUVWXYZ

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