C language is simple to calculate the number of characters

In this paper, an example of C language is presented to calculate the number of characters. Share with you for your reference. The details are as follows:

Char_counting. C is as follows:

#include<stdio.h>
int main()
{
  long nc;
  nc = 0;
  while(getchar() != '0')
    {
      ++nc;
    }
  printf("%ldn", nc);
}

Compile and use:

gcc char_counting.c -o char_counting.o

 
A common way to call:

[root@server1 c]# ./char_counting.o

123

450[ enter ]

6

 
Passing characters through a Linux pipe:

[root@server1 c]# echo helloworld0 | ./char_counting.o [ enter ]

10

Hope that the article described in the C programming language for you to help.