Defined in header <cstdio>
int fputs( const char* str, std::FILE* stream );

Writes every character from the null-terminated string str to the output stream stream, as if by repeatedly executing std::fputc.

The terminating null character from str is not written.


str - null-terminated character string to be written
stream - output stream

Return value

On success, returns a non-negative value.

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


The related function std::puts appends a newline character to the output, while std::fputs writes the string unmodified.

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 such as zero.


#include <cstdio>
int main(void)
    int rc = std::fputs("Hello World", stdout);
    if (rc == EOF)
        std::perror("fputs()"); // POSIX requires that errno is set


Hello World

See also

prints formatted output to stdout, a file stream or a buffer
writes a character string to stdout
writes a wide string to a file stream
gets a character string from a file stream
C documentation for fputs

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