#include #include using namespace std; void nhap(char s[100]) { do { cout<<"Nhap vao chuoi s: "; fflush(stdin); gets(s); } while (!strcmp(s, "")); } void dem(char s[100]) { int chuhoa, chuthuong, chuso, i; chuhoa = chuthuong = chuso = i = 0; while (s[i] != '\0') { if (isupper(s[i])) chuhoa++; if (islower(s[i])) chuthuong++; if (isdigit(s[i])) chuso++; i++; } cout<<"Co "<