1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
|
<html>
<head>
<title>Scope in C++</title>
</head>
<body bgcolor="#dddddd">
<font color=brown>
<hr>
<center><h1>Scope in C++.</h1></center>
<hr>
<p>
The :: operator is used within C++ to identify global variables that
conflict with local variable names. Obviously it would be good programming
practice to use suitable names in the first place......
<p>
<center>
<table width=1 bgcolor=ivory width=80%>
<tr>
<td>
<pre>
#include <iostream.h>
int Counter = 1;
main()
{
int Counter = 1;
for (int i=0; i< 10; i++)
{
cout << Counter << " " << ::Counter << endl;
Counter++;
}
return 0;
}
</pre>
</tr>
</td>
</table>
</center>
<p>
<hr>
<h2>Examples:</h2>
<img src="../../GRAPHICS/computer.gif" alt="o">
<a href="../EXAMPLES/scope.cc">Example program.</a>
<p>
<hr>
<h2>See Also:</h2>
<img src="../../GRAPHICS/whiteball.gif" alt="o">
<a href="../SYNTAX/ops.html">C++ operators.</a>.
</font>
<hr>
<font color=black>
<h2>C References</h2>
<p>
<img src="../../GRAPHICS/whiteball.gif" alt="o">
<a href="../../C/SYNTAX/glo_int_vars.html#global">Global Variables</a>.
<p>
<img src="../../GRAPHICS/whiteball.gif" alt="o">
<a href="../../C/CONCEPT/expressions.html">C Expressions and Operators</a>.
</font>
<hr>
<p>
<center>
<table border=2 width="80%" bgcolor="ivory">
<tr align=center>
<td width="25%">
<a href="../cref.html">Top</a>
</td><td width="25%">
<a href="../../C/master_index.html">Master Index</a>
</td><td width="25%">
<a href="../SYNTAX/keywords.html">Keywords</a>
</td><td width="25%">
<a href="../../C/FUNCTIONS/funcref.htm">Functions</a>
</td>
</tr>
</table>
</center>
<p>
<hr>
<font color=brown>
<address>Martin Leslie
<script language="JavaScript">
<!-- //
document.write(document.lastModified);
// -->
</script>
</address><p>
</font>
</body>
</html>
|