func_code_string: #include <bits/stdc++.h>   using namespace std;   char str[100030];   int main() {     while (gets(str) != NULL) {       int len = strlen(str), m, n1 = 0, n2 = 0;       for (int i = 0; i < len; i++)         if (str[i] >=  a  && str[i] <=  z )           n2++;         else           n1++;       int m1 = 0, m2 = 0;       m = n1;       for (int i = 1; i <= len; i++) {         int k = 0;         if (str[i - 1] >=  a  && str[i - 1] <=  z )           m2++;         else           m1++;         k += n1 - m1;         k += m2;         if (k < m) m = k;       }       printf( %d n , m);     }     return 0;   }   