std::puts
| Defined in header <cstdio>
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| int puts( const char *str ); |
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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
#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
| writes a character string to a file stream (function) | |
| (C++11) |
prints formatted output to stdout, a file stream or a buffer (function) |