// C program compiles & runs fine, even ; missing at end of struct
#include <stdio.h>
struct test
{ int a,b};     // missing semicolon
int main()
{
    struct test d={3,6};
    printf("%d",d.a);
    return 0;
}

// Following is compilation error in C++
#include <stdio.h>
struct test
{ int a,b};     // missing semicolon
int main()
{
    struct test d={3,6};
    printf("%d",d.a);
    return 0;
}