Basically, my goal for the struggling part is to swap the first letters of each string and print it. Everything seems to work except my code will not print B. I realize I need to store A[0] into a temp variable so it is not overwritten before being stored in B[0]. For some reason when I run my code (in the sites compiler), it will just print "ebcd". It never prints B even though I am telling it to.
#include <iostream>
#include <string>
#include <bits/stdc++.h>
using namespace std;
void wordSize(string a, string b){
int lenA = a.size();
int lenB = b.size();
cout << lenA << " " << lenB << endl;
}
void firstLetterSwap(string a, string b){
int sizeA = a.size();
int sizeB = b.size();
char temp;
char* A = new char[sizeA];
char* B = new char[sizeB];
strcpy(A, a.c_str());
strcpy(B, b.c_str());
A[0] = temp;
A[0] = B[0];
B[0] = temp;
cout << A << " " << B << endl;
}
int main() {
string a, b;
cin >> a;
cin >> b;
wordSize(a, b);
cout << a + b << endl;
firstLetterSwap(a, b);
return 0;
}