iOS混排计算中英文个数，中午算一个字符，英文和符号算半个字符

-(int)convertToInt:(NSString*)strtemp {    

    int strlength = 0;

    char* p = (char*)[strtemp cStringUsingEncoding:NSUnicodeStringEncoding];

    for (int i=0 ; i<[strtemp lengthOfBytesUsingEncoding:NSUnicodeStringEncoding] ;i++) {

        if (*p) {

            p++;

            strlength++;

        }

        else {

            p++;

        }

    }

     return (strlength+1)/2;

}