const fi='input.txt'

fo='output.txt'

var f1,f2:text;

a,b:integer;

begin

assign(f1,fi); reset(f1);

assign(f2,fo); rewrite(f2);

readln(f1,a,b);

writeln(f2,a+b);

close(f1);

close(f2);

end.

giúp mình với

xàm hả cha

đề ko có bất kì thứ gì mà kêu in ra?
 

#include <bits/stdc++.h>

using namespace std;

long long a,b,c,d;

int main()

{

freopen("input.txt","r",stdin);

freopen("output.txt","w",stdout);

cin>>a>>b>>c>>d;

cout<<a+b+c+d;

return 0;

}

help

const fi='input.txt'

fo='output.txt'

var f1,f2:text;

a,b,c,max:real;

begin

assign(f1,fi); reset(f1);

assign(f2,fo); rewrite(f2);

readln(f1,a,b,c);

min:=a;

if min>b then min:=b;

if min>c then min:=c;

writeln(f2,min);

close(f1);

close(f2);

end.

const fo='int.txt'

fo='out.txt'

var f1,f2:text;

m,n:integer;

begin

assign(f1,fi); reset(f1);

assign(f2,fo); rewrite(f2);

readln(f1,m);

readln(f1,n);

writeln(f2,m+n);

close(f1);

close(f2);

end.

const fi='input.txt'

fo='output.txt'

var f1,f2:text;

a:array[1..100]of integer;

i,n,t:integer;

begin

assign(f1,fi); reset(f1);

assign(f2,fo); rewrite(f2);

n:=0;

while not eof(f1) do 

begin

inc(n);

read(f1,a[n]);

end;

t:=0;

for i:=1 to n do t:=t+a[i];

write(f2,t);

close(f1);

close(f2);

end.

const fi='input.txt'

fo='output.txt'

var f1,f2:text;

n:integer;

begin

assign(f1,fi); reset(f1);

assign(f2,fo); rewrite(f2);

readln(f1,n);

if n<0 then writeln(f2,n,' la so am')

else if n=0 then writeln(f2,n,' khong la so am cung khong la so duong')

else writeln(f2,n,' la so duong');

close(f1);

close(f2);

end.