help me with c++

I need to find S and please explain how did you find S in N is 4

#include <iostream>

int main ()
{

int n,i,s;

cout<<"Put the number of n"<<endl;
cin>>n;

s=0
for (i=1;i<=n;i++)
s=s+i
cout<<"S is<<s<<endl;
return 0
}

What?

I need to find S if N is 4...

So what's your question? Run the program and input 4.

#include <iostream.h>
#include <stdlib.h>

int main()
{
int n,i,s;
cout<<"Insert number of n"<<endl;
cin>>n;
s=o;
for(i=1;<=n;i++)
s=s+i;
cout<<"S is"<<s<<endl;
system("PAUSE");
return 0;

I have 3 erors can anyone fix them?

But before you can run it, you will need to fix the compile errors - particularly relating to missing ;

I fixed all missing ; but still 3 errors left....

Anyone has idea where am i wrong?

#include <iostream.h>
#include <stdlib.h>

int main()
{
int n,i,s;
cout<<"Insert number of n"<<endl;
cin>>n;
s=o;
for(i=1;<=n;i++)
s=s+i;
cout<<"S is"<<s<<endl;
system("PAUSE");
return 0;

Code:

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#include <iostream.h>

---

This is not standard ANSI c++. For standard ANSI c++ your headers should be

Code:

---

#include <iostream>
#include <cstdlib>
using namespace std;

---

Quote:

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Originally Posted by lopce

I fixed all missing ; but still 3 errors left....

Anyone has idea where am i wrong?

Code:

---

#include <iostream.h>
#include <stdlib.h>

int main()
{
        int n,i,s;
        cout<<"Insert number of n"<<endl;
        cin>>n;
        s=0;
        for(i=1;i<=n;i++)
                s=s+i;
        cout<<"S is"<<s<<endl;
        system("PAUSE");
        return 0;
}

---

---

If you want to learn C++, you need to understand the syntax of the language. These are simple errors that even a beginner should be able to find and fix easily.

By the way, the answer is 10.

S = (N * (N + 1)) / 2;

Now write a program to find 1² + 2² + 3² + 4². :D