Which of the following statement are correct about the program

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Which of the following statement are correct about the program given below?

#include <stdio.h>
int main ( )
{
      char ch;
      while (ch = 0; ch <= 255; ch++)
      printf ("ASCII value %d Character %c\n", ch, ch);
      return 0;
}

1. The program goes in an infinite loop.
2. The program prints all the ASCII values with its corresponding characters.
3. Error: ch should be declared as an int.
4. The program reports an error as while loop cannot take the form of a for loop.

Correct Option: D

The program reports an error as while loop cannot take the form of a for loop.