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--- c:conio.h:ungetch [2013/02/03 21:04]
127.0.0.1 external edit
+++ c:conio.h:ungetch [2024/02/16 01:05] (current)
@@ Line 1: / Line 1: @@
 ====== ungetch ======
 <code c>
+int ungetch(int ch);
 </code>
 ==== description of ungetch ====
-ungetch is in work by code-reference.com \\
+Pushes a character back into the keyboard buffer.\\
-if you are faster... don't hasitate and add it
+\\
+return\\
+Successful execution ungetch returns the character ch.\\
+If an error occurs, the function returns EOF.\\
 <code c>
-no example at the moment
+#include <stdio.h>
+#include <ctype.h>
+#include <conio.h>
+int main(void)
+{
+   int i=0;
+   char ch;
+   puts("Input an integer followed by a char:");
+   while((ch = getche()) != EOF && isdigit(ch))
+      i = 10 * i + ch - 48;
+   if (ch != EOF)
+      ungetch(ch);
+  printf("\n\ni = %d, next char in buffer = %c\n", i, getch());
+   return 0;
+}
 </code>
 ===== output of ungetch c example =====
-    no example at the moment
+   The answer is almost 42
+   horizontal cursor position from where this text appears = 1
+   c:\Borland>ungetch.exe
+   Input an integer followed by a char:
+c
+   i = 1, next char in buffer = c
+{{:c:conio.h:ungetch.png?nolink|}}

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