I was asked to find the output of the following code segments. For any expression I was asked to evaluate form right to left by my teacher.
#include<iostream.h>
#include<conio.h>
int main()
{clrscr();
int a[]={10,20,30,40};
for(int i=0;i<3;)
a[i]=a[++i];
for(i=0;i<4;++i)
cout<<a[i]<<endl;
return(0);
}
Now if I evaluate line7 from right to left, my output should be:
20
30
40
40
But if I evaluate from left to right, it will be
10
20
30
40
On running the program the output was case2.
Here's another one.
#include<iostream.h>
#include<conio.h>
int main()
{clrscr();
int a[]={10,20,30,40};
for(int i=0;i<3;)
a[++i]=a[i];
for(i=0;i<4;++i)
cout<<a[i]<<endl;
return(0);
}
This time when I evaluated form right to left:
10
20
30
40
and from left to right:
10
10
10
10
And on running it I got case 1.
In which direction am I really supposed to evaluate? Why are both cases not matching?
