C/prefix and postfix - Revision history

Marek at 16:00, 7 October 2015

2015-10-07T16:00:34Z

Marek at 15:57, 7 October 2015

2015-10-07T15:57:53Z

Marek at 15:56, 7 October 2015

2015-10-07T15:56:00Z

Marek: C operator pre and postfix form difference

2015-10-07T15:50:58Z

C operator pre and postfix form difference

New page

<source lang="c">
/*
This example demonstrates the difference in using
prefix or postfix form of increment and decrement operators
*/

#include <stdio.h>

int main(int argc, char * argv[])
{
int i,j;

i=15;
j=15;

printf("I= %d , J= %d \n\r", i, j);
printf("-------------\n\r");
printf("I= %d , J= %d \n\r", ++i, j++);
printf("-------------\n\r");
printf("I= %d , J= %d \n\r", i, j);

printf("=============\n\r");

printf("I= %d , J= %d \n\r", i, j);
printf("-------------\n\r");
printf("I= %d , J= %d \n\r", --i, j--);
printf("-------------\n\r");
printf("I= %d , J= %d \n\r", i, j);

return 0;
}
</source>

@@ Line 1: / Line 1: @@
-C increment ++ and decrement -- operators give in the end same value change to variable, either used in prefix or postfix forms
+C increment ++ and decrement -- operators give in the end same value change to variable whether used in prefix or postfix form
 prefix form:
@@ Line 12: / Line 12: @@
-downloadable file here: [[:File:pre_post.zip]] , source example below
+downloadable file here: [[:File:pre_post.zip | pre_post.zip ]] , source example below
 <source lang="c">

← Older revision		Revision as of 15:56, 7 October 2015
Line 1:		Line 1:
		+	C increment ++ and decrement -- operators give in the end same value change to variable, either used in prefix or postfix forms

		+	prefix form:
		+	--var;
		+	++var;
		+
		+	postfix form:
		+	var--;
		+	var++;
		+
		+	however when used within functions as argument operators there is a big difference, the example below demonstrates it
		+
		+
		+	downloadable file here: [[:File:pre_post.zip]] , source example below

	<source lang="c">		<source lang="c">

@@ Line 22: / Line 22: @@
 #include <stdio.h>
-int main(int argc, char * argv[])
+int main(int argc, char **argv)
+  {
    int i,j;