What will be the output of the following C code   #include <stdio.h> int main() { int x = 20;  x %= 3;  printf("%d",x); return 0; }

The output of the code will be 2.

Here's the step by step explanation:

1. The code starts with including the standard input/output library of C.

2. The main function is declared, which is the entry point of the program.

3. An integer variable x is declared and initialized with the value 20.

4. The next line x %= 3; is a shorthand for x = x % 3;. The % operator is the modulus operator, which gives the remainder of the division of two numbers. So, x %= 3; means the value of x is updated to the remainder of the division of x by 3. As 20 divided by 3 gives a remainder of 2, the value of x becomes 2.

5. The printf function is used to print the value of x, which is 2.

6. The main function returns 0, indicating successful termination of the program.