Bài $1$
Program Hotboy;
Uses crt;
Var A:array[1..100] of integer;
I,n,S : real;
Begin
Clrscr ;
S:=0;
Write('nhap so n'); readln(n);
For i:=1 to n do
Begin
Write('A[',i,']'); readln(A[i]);
End;
For i:=1 to n do
S:=S+ A[i] ;
Writeln('Tong la',S);
Readln
End.
Bài $2$
Program Hotboy;
Uses crt;
Var A:array[1..100] of integer;
I,n,X : byte;
Begin
Clrscr ;
N:=0;
Write('nhap so X'); readln(X);
Write('nhao so n'); readln(n);
For i:=1 to n do
Begin
Write('A[',i,']'); readln(A[i]);
End;
For i:=1 to n do
If A[i] = X then inc(n);
Writeln('co so phan tu bang ',X,' trong mang la',n);
Readln
End.
