macOS can i find unsigned char buffer[50] is null or not?

[mkristain]

hi is there any option to find unsigned char buffer[50] having all null values or not.

thanks.

 

[lee1210]

unsigned char allNull[50] = {'\0'};
if(memcmp(allNull,buffer,50) == 0) {
  printf("buffer is all null");
}

-Lee

 

[camjknight]

Here's a simple function.

bool allNull(char * string, int length) {
	for (int i = 0; i < length; ++i) {
		if (string[i] != NULL) return false;
	}
	
	return true;
}

 

[mkristain]

thanks..