puts - cppreference.com (original) (raw)

| | | | | ----------------------------- | | | | int puts( const char* str ); | | |

Writes every character from the null-terminated string str and one additional newline character '\n' to the output stream stdout, as if by repeatedly executing fputc.

The terminating null character from str is not written.

[edit] Parameters

str	-	character string to be written

[edit] Return value

On success, returns a non-negative value.

On failure, returns EOF and sets the error indicator (see ferror()) on stream.

[edit] Notes

The puts function appends the newline character to the output, while fputs function does not.

Different implementations return different non-negative numbers: some return the last character written, some return the number of characters written (or INT_MAX if the string was longer than that), some simply return a non-negative constant.

A typical cause of failure for puts is running out of space on the file system, when stdout is redirected to a file.

[edit] Example

#include <stdio.h> int main(void) { int rc = puts("Hello World"); if (rc == EOF) perror("puts()"); // POSIX requires that errno is set }

Output:

[edit] References