putchar example in C

Header file:

    stdio.h

Synopsis:

     int putchar(int c);

Description:

     It is equivalent to putc(c, stdout).

putchar function C example:

  #include<stdio.h>
  int main() {
        char ch;
        FILE *fp;
        fp = fopen("input.txt", "r");
        while ((ch = fgetc(fp)) != EOF)
                putchar(ch);
        return 0;
  }

  Output:

  jp@jp-VirtualBox:~/cpgms/exp$ ls
  a.out   input.txt

  jp@jp-VirtualBox:~/cpgms/exp$ cat input.txt
  Hello world
  This is putchar example program in C
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  jp@jp-VirtualBox:~/cpgms/exp$ ./a.out
  Hello world
  This is putchar example program in C
  Thanks for visiting our blog