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c:stdio.h:vsprintf

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c:stdio.h:vsprintf [2013/01/22 22:02] (current)
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 +{{keywords>wiki library source code example reference}}
 +===== vsprintf =====
 +
 +<code c>
 +    int vsprintf(char *str, const char *format, va_list arg);
 +</code>
 +
 +generate a string from a format string.
 +For this purpose, the buffer that is passed as first argument, the format string is copied and replaces the substitution symbol with the given parameters.
 +
 +===== C Sourcecode Example =====
 +<code c>
 +/* 
 + * vsprintf example code
 + * http://code-reference.com/c/stdio.h/vsprintf 
 + */
 +
 +#include <stdio.h> /* including standard library */
 +//#include <windows.h> /* uncomment this for Windows */
 +
 +#include <stdarg.h>
 +int myprintf( char const * format, ... )
 +{
 +  va_list args;
 +  int n;
 +  char buffer[200];
 +
 +  va_start( args, format );
 +  vsprintf( buffer, format, args );
 +  va_end( args );
 +
 +  return printf("vsprintf example : %s", buffer);
 +}
 +
 +int main (void)
 +{
 +  char string[] ="Hello";
 +
 +   myprintf( " %s World\n", string);
 +
 +   return 0;
 +}
 +</code>
 +
 +==== output ====
 +
 +
 +    output:  ./vsprintf 
 +    vsprintf example : Hello World
 +    
  
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c/stdio.h/vsprintf.txt · Last modified: 2013/01/22 22:02 (external edit)

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