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| author | Tobias Klauser <tklauser@distanz.ch> | 2008-01-27 11:37:44 +0100 |
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| committer | Tobias Klauser <tklauser@xenon.tklauser.home> | 2008-01-27 11:37:44 +0100 |
| commit | 7e0f021a9aec35fd8e6725e87e3313b101d26f5e (patch) | |
| tree | b1cacc4b24393f517aeb4610e9e1021f954307a8 /reference/C/FUNCTIONS/strcpy.html | |
Initial import (2.0.2-6)2.0.2-6
Diffstat (limited to 'reference/C/FUNCTIONS/strcpy.html')
| -rw-r--r-- | reference/C/FUNCTIONS/strcpy.html | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/reference/C/FUNCTIONS/strcpy.html b/reference/C/FUNCTIONS/strcpy.html new file mode 100644 index 0000000..2a15dbb --- /dev/null +++ b/reference/C/FUNCTIONS/strcpy.html @@ -0,0 +1,127 @@ +<title>strcpy function</title> + +<head> +<script language="JavaScript"> +</script> +</head> + +<body bgcolor="#ffffcc"> +<hr> +<center> +<h1>strcpy function</h1> +</center> +<hr> +<p> +<b>strcpy</b> copies a string. This function will copy the bytes +stored at the location pointed to by 's2' to the location pointed to by 's1'. + +<pre> + + s1 s2 + | | + V V + - - - - - - - -- + | | | | | |a|b|c|\0| + - - - - - - - -- + ^ ^ | | + | | | | + -|------------- | + --------------- +</pre> + +<hr> +<pre> +Library: string.h + +Prototype: char strcpy(char *s1, const char *s2); + +Syntax: + char string2[20]="red dwarf"; + char string1[20]=""; + strcpy(string1, string2); +</pre> + +<hr> + +<h2>Notes</h2> + +Dont forget that strings are terminated with a +'<a href="../SYNTAX/null.html">\0</a>' so allow space for it... +<p> +There is another way to code the example above. Consider this piece of +code. +<pre> + main() + { + char *string2="red dwarf"; + char *string1; + + string1=string2; + } +</pre> + +'string2' is now a character pointer (only one byte) that points to a +storage location containing "red dwarf" (a +<a href="../CONCEPT/constants.html#str">string constant</a>). So +<b>string1=string2;</b> copies the address of "red dwarf" into +'string1'. This version of the code will execute quicker than strcpy +because less data is being moved around the system. + + +<hr> +<img src="../../GRAPHICS/computer.gif"> +<a href="../EXAMPLES/strcpy.c">example program.</a> +<hr> + +<h2>See also:</h2> + +<img src="../../GRAPHICS/whiteball.gif"> +<a href="strtok.html">strtok</a> +<br> + +<img src="../../GRAPHICS/whiteball.gif"> +<a href="strncpy.html">strncpy</a> +<br> + +<img src="../../GRAPHICS/whiteball.gif"> +<a href="sprintf.html">sprintf</a> +<br> + +<img src="../../GRAPHICS/man.gif"> +<a href="../MAN/strcat.htm"><i>strcat</a> +<br> + +<img src="../../GRAPHICS/whiteball.gif"> +<a href="../CONCEPT/string.html">strings</a> +<br> + +<img src="../../GRAPHICS/whiteball.gif"> +<a href="memcpy.htm">memcpy</a> Copy data between tow memory locations. +<p> + + +<p> + +<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="../master_index.html"> Master Index</a> +</td><td width="25%"> +<a href="../SYNTAX/keywords.html"> Keywords</a> +</td><td width="25%"> +<a href="funcref.htm"> Functions</a> +</td> +</tr> +</table> +</center> +<p> +<hr> +<address>Martin Leslie +</address><p> +</body> +</html> |