#include<iostream> #include<string> using namespace std; int main() { char s1,s2; string S; getline(cin,S); cin>>s1; if(s1>='a'&&s1<='z'){ s2=s1-32; } else if(s1>='A'&&s1<='Z') { s2=s1+32; } else{ s2=s1; } int sum=0; for(int i=0;i<S.length();i++) { if...
