в 14:21, 25 мая 2010

2010-05-25T14:21:19Z

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2010-05-25T10:32:43Z

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==Inner variable shadows outer variable==

<source lang="cpp">#include <stdio.h>
int main(void)
{
int count = 0;
do
{
int count = 0;
++count;
printf("\ncount = %d ", count);
}
while( ++count <= 8 ); /* This works with outer count */
/* this is outer */
printf("\ncount = %d\n", count);
return 0;
}</source>
<pre class=codeResult>count = 1
count = 1
count = 1
count = 1
count = 1
count = 1
count = 1
count = 1
count = 1
count = 9</pre>

==Scope of variables==

<OL><LI>Variable can be defined in the block.</LI><LI>The blocks are marked using { and } braces.</LI><LI>The scope of the variable is in the block where it is declared.</LI><LI>Variable defined in the outer block can be used in the inner block.</LI><LI>The nearest definition has more precedence.</LI></OL>

<source lang="cpp">#include <stdio.h>
main() {
int i = 10;
{
int i = 0;
for( i=0;i<2;i++)
{
printf("value of i is %d\n",i);
}
}
printf("the value of i is %d\n",i);
}</source>
<pre class=codeResult>value of i is 0
value of i is 1
the value of i is 10</pre>

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в 14:21, 25 мая 2010

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