NAME¶

std::puts - std::puts

Synopsis¶

Defined in header <cstdio>
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
std::fputc.

The terminating null character from str is not written.

Parameters¶

str - character string to be written

Return value¶

On success, returns a non-negative value

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

Notes¶

The std::puts function appends the newline character to the output, while std::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 std::puts is running out of space on the file system,
when stdout is redirected to a file.

Example¶

// Run this code

#include <cstdio>

int main()
{
int rc = std::puts("Hello World");

if (rc == EOF)
std::perror("puts()"); // POSIX requires that errno is set
}

Output:¶

Hello World

See also¶

fputs writes a character string to a file stream
(function)
printf
fprintf prints formatted output to stdout, a file stream or a buffer
sprintf (function)
snprintf
(C++11)