C和C++之间的不兼容性

#include<stdio.h>
void my_function(x, y)int x;int y; { // Not valid in C++
   printf("x = %d, y = %d", x, y);
}
int main() {
   my_function(10, 20);
}

x = 10, y = 20

Error in C++ :- x and y was not declared in this scope

#include<stdio.h>
main() {
   const x = 10;
   const y = 20;
   printf("x = %d, y = %d", x, y);
}

x = 10, y = 20

Error in C++ :- x does not name a type
y does not name a type

#include<stdio.h>
int x;
int x;
int main() {
   x = 10;
   printf("x = %d", x);
}

x = 10

Error in C++ :- Redefinition of int x

#include<stdio.h>
#include<malloc.h>
void my_function(int n) {
   int* ptr = malloc(n* sizeof(int)); //implicitly convert void* to int*
   printf("Array created. Size: %d", n);
}
main() {
   my_function(10);
}

Array created. Size: 10

Error in C++ :- Invalid conversion of void* to int*

#include<stdio.h>
void my_function() {
   printf("Inside my_function");
}
main() {
   my_function(10, "Hello", 2.568, 'a');
}

Inside my_function

Error in C++ :- Too many arguments to function 'void my_function()'