#include <stdio.h> #define IS_UPPER(_ch_) (_ch_ >= 'A' && _ch_ <= 'Z') #define IS_LOWER(_ch_) (_ch_ >= 'a' && _ch_ <= 'z') #define IS_DIGIT(_ch_) (_ch_ >= '0' && _ch_ <= '9') #define F_UPPER 'U' #define F_LOWER 'l' #define F_DIGIT 'D' int main() { char *str = "1234helloILOVE123ONEtwoone"; char *p = str; int max = 0,counter = 0,flag = 0; for(; '