De thi va Dap an HSG tin hoc

Bài 1: Chương trình Pascal
VAR
i, n: INTEGER;
x, p, S: REAL;
BEGIN
Write('x, n = '); Readln(x, n);
S := 1; p := 1;
FOR i := 1 TO n DO
BEGIN
p := p * x / i;
S := S + p;
END;
Writeln('exp(', x:1:4, ') = ', S:1:4);
readln;
END.
Bài 2: Chương trình Pascal

USES crt;
VAR n: LONGINT;
m,tong,i: INTEGER;
BEGIN
clrscr;
write('Nhap n: '); readln(n);
write('Nhap m: '); readln(m);
tong:=0;
FOR i:=1 TO m DO
BEGIN
tong:=tong+(n MOD 10);
n:=n DIV 10;
END;

write('Tong ',m,' chu so cuoi cua so vua nhap = ',tong);
readln;
END.
Bài 3: Chương trình Pascal

VAR tep1,tep2:TEXT;
i,n,s:INTEGER;
a:ARRAY[1 100] OF INTEGER;
BEGIN
assign(tep1,'D:\BT.txt');
rewrite(tep1);
write('nhap n= ');readln(n);
FOR i:=1 TO n DO
BEGIN
write('Nhap so thu ',i,'=');
readln(a[i]);
write(tep1,a[i]:4);
END;
close(tep1);
assign(tep2,'D:\BT1.txt');
rewrite(tep2);
reset(tep1);
s:=0;
WHILE NOT eof(tep1) DO
BEGIN
read(tep1,a[i]);
write(a[i]:4);
IF(a[i] MOD 2=0) THEN s:=s+a[i];
END;
write(tep2,s);

writeln;
write('Tong cac so chan co trong day la: ',s);
close(tep2);
readln;
END.
Bài 4: Chương trình Pascal

USES Crt;
TYPE Mang = ARRAY[1 10,1 10] OF INTEGER;
VAR A:Mang;
m,n,i,j,x,dem,S,max:INTEGER;
BEGIN
Write('Nhap so dong m='); Readln(m);
Write('Nhap so cot n='); Readln(n);
FOR i:=1 TO m DO
FOR j:=1 TO n DO
BEGIN
Write('A[',i,',',j,']='); Readln(A[i,j]);
END;
FOR i:=1 TO m DO
BEGIN
FOR j:=1 TO n DO
Write(A[i,j]:5);
Writeln;
END;

Write('Nhap x='); Readln(x);
dem:=0;
Writeln('Vi tri cua x trong mang A: ');
FOR i:=1 TO m DO

FOR j:=1 TO n DO
IF x=A[i,j] THEN
BEGIN
Write(i,',',j,' ; ');
dem:=dem+1;
END;
Writeln('So lan xuat hien cua x trong mang A la: ',dem);
S:=0;
FOR i:=1 TO m DO
BEGIN
Max:=A[i,1];
FOR j:=2 TO n DO
IF max<A[i,j] THEN max:=A[i,j];
S:=S+max;
END;
Writeln('Tong cac phan tu lon nhat cua moi dong la: ',S);
Readln;
END.