Answer / astha biswas

there are some key-words like class , new etc which can be
used as identifiers in c. so if we save program in .c using,
new as an identifier, it will not show any error; but if we
save the same program in .cpp, it will show error as new is
an operator in c++.

EX:

#include<stdio.h>
#include<conio.h>
void main()
{
int new;
clrscr();
new=3;
printf("%d",new);
}

if we execute this program in .c, output will be 3.
but if we execute this program in .cpp; then it will show 2
errors.
1. declaration terminated incorrectly.
2. lvalue required.

Answer / bijayalaxmi behera.

In the strictly mathematical sense,c++ is not strictly super
set of c.Because,there are some programs that are valid c
but not valid c++.One more thing,few ways of writing the
code that has a different meaning in c and c++.

Answer / subhashree das

there are some operators in c++; which can be used as
identifiers in c. so if we execute the program in .c it will
not show any error, where as if we execute the same program
in .cpp , it will show error.

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