1. int a[5] is a declaration of array that has 5 places for int value, but a[4] is the fifth variable of array [a]
2.a.score b.double c.5 d.0-5 e.score[1]
3.a. too many argument assigned. b. no error c. no error
4.abc
5.
1.1 2.2 3.3
1.1 3.3 3.3
6.
0 2 4 6 8 10 12 14 16 18
0 4 8 12 16
7. there is no place 9 for the array.
8. at the end there is no a[10] variable.
9.
int a[20] for(int i=0,i<20,i++) {
cin<<a[i];
}
10. 14,1006
11.tripler(a[3]); tripler(a); are illegal
12.b[5] does not exist.