Answer Posted / deepesh kumar prajapati

The main difference b/w c and c++ is that " in 'c' language
we declaration any variable after main () compulsory but in
c++ any variable declaration wherever "
for ex:-

in 'c' program eg.

#include<stdio.h>
void main()
{
int a,b;
printf("enter any no.=");
scanf("%d",&a);
b=a*a;
printf("square is=%d",b);
}


In c++ eg.


#include<iostream.h>
void main()
{
int a;
cout<<"enter any no";
cin>>a;
int b=a*a;
cout<<"square is="<<b;
}

note;-
both program is same (square any no.) only difference
is first program b is declare after main() an second program
b is declared after scan value.

How to handle exception in c++, For example in a functions i am assigning memory to some variables and also in next instructions in am dividing one variable also. If this functions generates a error while allocating memory to those variable and also while dividing the variable if i divide by zero then catch block how it will identify that this error has cone from perticular instruction

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