Write a C program which when compiled and run, prints out a message indicating whether the compiler that it is compiled with, allows /* */ comments to nest.

#include
int allowed(){
     int a=1;
     /* /* */ a=0; // */
    return  a;
}

int main(){
   if (allowed())
       printf("Nested comments Allowed\n");
   else
       printf("Nested comments not Allowed\n");
   return 0;
}

In case of nested comments not allowed, we have it as /*/* */ a=0;// */
Bigger font show commented area........


What if the single line comment style is not supported?
After all, single line style comments were introduced with C++...........
#include
int allowed(){
    int i=0, k=1;
    int *j = &k;
    return  /* /* */ i */*j;/* */1;
}

int main(){
   if (allowed())
       printf("Nested comments Allowed\n");
   else
       printf("Nested comments not Allowed\n");
   return 0;
}

So in case of nested comments allowed we have /*/* *\ *\.....
but in case its allowed it is : /*/* *\ *\