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Showing content from https://en.cppreference.com/w/cpp/language/../algorithm/../../cpp/../cpp/../cpp/../c/io/fputs.html below:

fputs - cppreference.com

int fputs( const char*          str, FILE*          stream ); (until C99) int fputs( const char* restrict str, FILE* restrict stream ); (since C99)

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

The terminating null character from str is not written.

[edit] Parameters str - null-terminated character string to be written stream - output stream [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 related function puts appends a newline character to the output, while 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.

[edit] Example 
#include <stdio.h>
 
int main(void)
{
    int rc = fputs("Hello World", stdout);
 
    if (rc == EOF)
       perror("fputs()"); // POSIX requires that errno is set
}

Output:

[edit] References
[edit] See also

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