Atoi objective-c

atoiobj-c

- (int) atoi:(char *) str {
    if(!str)
        NSLog(@"Enter valid string");
    
	int result = 0;
    char *p = str;
	while((*p>='0') && (*p<='9')) {
        result = result*10 + (*p - '0');
        p++;
    }
	return result;
}