iOS 判断中英文字符长度

- (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;

}