here lies this prorgram




#include <iostream.h>
#include <stdlib.h>
void main()
{
a:
int x,y,sum=0;
char restart;
cout<<"Enter the first number ";
cin>>x;
cout<<"Enter the second number ";
cin>>y;
if (x%2==0 && y%2==0)
{
for (int i=x; i<=y; i+=2){
sum=sum+i;
}
cout<<"Total= "<<sum<<"\n\n";
}
if (x%2==0 && y%2!=0)
{
for (int i1=x; i1<y; i1+=2){
sum=sum+i1;
}
cout<<"Total= "<<sum<<"\n\n";
}
if (x%2!=0 && y%2==0)
{
for (int i2=x+1; i2<=y; i2+=2){
sum=sum+i2;
}
cout<<"Total= "<<sum<<"\n\n";
}
if (x%2!=0 && y%2!=0)
{
for (int i3=x+1; i3<y; i3+=2){
sum=sum+i3;
}
cout<<"Total= "<<sum<<"\n\n";
}
cout<<"[If you want to restart the program press y else press n; (Y/
N)] ";
cin>>restart;
if (restart=='y' || restart=='Y')
{
system("cls");
goto a;
}
}



Is it correct na ? I made it myself

"Xohaib" wrote:

> here lies this prorgram
>
>
>
>
> #include <iostream.h>
> #include <stdlib.h>
> void main()
> {
> a:
> int x,y,sum=0;
> char restart;
> cout<<"Enter the first number ";
> cin>>x;
> cout<<"Enter the second number ";
> cin>>y;
> if (x%2==0 && y%2==0)
> {
> for (int i=x; i<=y; i+=2){
> sum=sum+i;
> }
> cout<<"Total= "<<sum<<"\n\n";
> }
> if (x%2==0 && y%2!=0)
> {
> for (int i1=x; i1<y; i1+=2){
> sum=sum+i1;
> }
> cout<<"Total= "<<sum<<"\n\n";
> }
> if (x%2!=0 && y%2==0)
> {
> for (int i2=x+1; i2<=y; i2+=2){
> sum=sum+i2;
> }
> cout<<"Total= "<<sum<<"\n\n";
> }
> if (x%2!=0 && y%2!=0)
> {
> for (int i3=x+1; i3<y; i3+=2){
> sum=sum+i3;
> }
> cout<<"Total= "<<sum<<"\n\n";
> }
> cout<<"[If you want to restart the program press y else press n; (Y/
> N)] ";
> cin>>restart;
> if (restart=='y' || restart=='Y')
> {
> system("cls");
> goto a;
> }
> }
>
>
>
> Is it correct na ? I made it myself

I would say no. At best it is clumsy. It looks like ( I say looks like
because the indentation was lost between you and me) you have four for loops
and choosing the proper one depending on the evenness or oddness of x and y.
The original question is poorly worded, IMO, but in it, the oddness or
evenness of x and y was *not* a criterion. Also, there is no assurance that
y is greater than x, I think your program assumes that.. One possible fix
involves using the abs() function that lives in <stdlib.h>.

The use of the goto is considered extremely poor form. The correct form for
the outer loop is a "do loop", since you want to make at least one pass
through the loop..

Nitpicking.

You are using an old compiler, I suspect your instructor is too lazy to
figure out that there are much newer compilers that are *free*. (The use of
suffix h on header files is obsolete.)

void main() should be int main()

Use spaces instead of tabs for Usenet postings, tabs can be lost in
transmission..