From 754bbf7a25a8dda49b5d08ef0d0443bbf5af0e36 Mon Sep 17 00:00:00 2001 From: Craig Jennings Date: Sun, 7 Apr 2024 13:41:34 -0500 Subject: new repository --- devdocs/c/io%2Ffputc.html | 66 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 devdocs/c/io%2Ffputc.html (limited to 'devdocs/c/io%2Ffputc.html') diff --git a/devdocs/c/io%2Ffputc.html b/devdocs/c/io%2Ffputc.html new file mode 100644 index 00000000..d3993152 --- /dev/null +++ b/devdocs/c/io%2Ffputc.html @@ -0,0 +1,66 @@ +

fputc, putc

Defined in header <stdio.h> 
int fputc( int ch, FILE* stream );
+		 
int putc( int ch, FILE* stream );
+

Writes a character ch to the given output stream stream. putc() may be implemented as a macro and evaluate stream more than once, so the corresponding argument should never be an expression with side effects.

+

Internally, the character is converted to unsigned char just before being written.

+

Parameters

+ + +
ch - character to be written
stream - output stream

Return value

On success, returns the written character.

+

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

+

Example

+

Shows putc with error checking

+
#include <stdio.h>
+#include <stdlib.h>
+ 
+int main(void)
+{
+    int ret_code = 0;
+    for (char c = 'a'; (ret_code != EOF) && (c != 'z'); c++)
+        ret_code = putc(c, stdout);
+ 
+    // Test whether EOF was reached.
+    if (ret_code == EOF && ferror(stdout))
+    {
+        perror("putc()");
+        fprintf(stderr, "putc() failed in file %s at line # %d\n",
+                __FILE__, __LINE__ - 7);
+        exit(EXIT_FAILURE);
+    }
+    putc('\n', stdout);
+ 
+    return EXIT_SUCCESS;
+}

Output:

+
abcdefghijklmnopqrstuvwxy

References

See also

+ +
writes a character to stdout
(function)
C++ documentation for fputc, putc
+

+ © cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
+ https://en.cppreference.com/w/c/io/fputc +

+
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