Question

1. Write another function called checkdiag2 (int checkdiag2 (int matrix[][100], int size)) that will return 1 if all the numbers on the antidiagonal are the same and 0 otherwise.
2. Rewrite your main program to use 2D dynamic allocation instead for your array. Your array will have rows and columns depending of the first integer read from the file.
3. Call your function from the main program. A typical report would look like The matrix is 8x8 and all the numbers on the antidiagonal are the same.
4. Check your program with the same data files as before.

Exercise #4:

1. Write a program that asks the user for a sentence and displays the following four things (see example with "Life Is Good"). They are in increasing order of difficulty.
   1. How many characters in that sentence? [12]
   2. How many words in that sentence? [3]
   3. The sentence backwards [dooG sI efiL]
   4. The words (not the letters) shown in reverse order (not mandatory! this one is hard!!) [Good Is Life]

Answer 1

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#include <bits/stdc++.h>
using namespace std;
int alpha(char c)
{
if(((c<='z')&&(c>='a'))||((c<='Z')&&(c>='A')))return 1;
else return 0;
}

int main() {
string s;
getline(cin,s);
cout<<"No of characters are "<<s.size()<<endl;
int words=0;
for(int i=0;i<s.size();i++)
{
if (alpha(s[i]))
{
while((i<s.size())&&(alpha(s[i])))
{
i++;
}
words++;
}
}
cout<<"No of Words are "<<words<<endl;
reverse(s.begin(),s.end());
cout<<s<<endl;
   return 0;
}