How to calc array length in Labwindows CVI ?

How to calc array length in Labwindows CVI ? In labwiew,I can find function to calc array length,but in CVI ,I can not ,...

Hello 让一切随风 
char  *name ;                              
int length = 0;
int i = 0;
 name = malloc(256) ; 
strcpy(name   , "National Instruments");
while( name[i] ! = "\0")
  length ++;
i++
free(name);

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