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      puts

      From cppreference.com
      <c‎ |io
       
       
      File input/output
      Types and objects
      Functions
      File access
      Unformatted input/output
      (C95)(C95)
      (C95)
      (C95)(C95)
      (C95)
      (C95)

      Formatted input
       
      Defined in header<stdio.h>
      int puts(constchar* str);

      Writes every character from the null-terminated stringstr and one additional newline character'\n' to the output streamstdout, as if by repeatedly executingfputc.

      The terminating null character fromstr is not written.

      Contents

      [edit]Parameters

      str - character string to be written

      [edit]Return value

      On success, returns a non-negative value.

      On failure, returnsEOF and sets theerror indicator (seeferror()) onstream.

      [edit]Notes

      Theputs function appends the newline character to the output, whilefputs function does not.

      Different implementations return different non-negative numbers: some return the last character written, some return the number of characters written (orINT_MAX if the string was longer than that), some simply return a non-negative constant.

      A typical cause of failure forputs is running out of space on the file system, whenstdout is redirected to a file.

      [edit]Example

      Run this code
      #include <stdio.h> int main(void){int rc= puts("Hello World"); if(rc==EOF)perror("puts()");// POSIX requires that errno is set}

      Output:

      Hello World

      [edit]References

      • C23 standard (ISO/IEC 9899:2024):
      • 7.21.7.9 The puts function (p: TBD)
      • C17 standard (ISO/IEC 9899:2018):
      • 7.21.7.9 The puts function (p: TBD)
      • C11 standard (ISO/IEC 9899:2011):
      • 7.21.7.9 The puts function (p: 333)
      • C99 standard (ISO/IEC 9899:1999):
      • 7.19.7.10 The puts function (p: 299)
      • C89/C90 standard (ISO/IEC 9899:1990):
      • 7.9.7.10 The puts function

      [edit]See also

      writes a character string to a file stream
      (function)[edit]
      prints formatted output tostdout, a file stream or a buffer
      (function)[edit]
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