C++ pls sol

Given the following C++ program, what will be the output when the program runs? #include using namespace std; int main() { int n34; n= 1+ ++; switch(n){ case 4: n=; break; case 5: break; case 6: n--; break; case 7: nan; break; > cout using namespace std; int main() { int a,b,ca; asbac; double area cout > a: cout > b; area: cout using namespace std; int main() { int a=10; for(int i=-5; isa; i =5) cout using namespace std; int main() { int xn2; int yo; if (tx1) 11 (x+3)) a (xue)) X; x +++y: else if ((x2) a (x)){ XE X- "V else Xe; cout using namespace std; int main() char letters int no2) cout > letters switch(letter) case 'a': case 'A': 2+ n) case "b' case '8': break; cout