std::puts

Header: <cstdio>

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.

# Declarations

int puts( const char *str );

# Parameters

str: character string to be written

# Return value

On success, returns a non-negative value

# 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

#include <cstdio>
 
int main()
{
    int rc = std::puts("Hello World");
 
    if (rc == EOF)
        std::perror("puts()"); // POSIX requires that errno is set
}