What would be the output of the following program? #include <stdio.h> int main( ) { int j=1; while (j <= 255) { printf ( "%c %d\n ", j, j ); j++; } return 0; }

The output of this program would be a list of ASCII characters and their corresponding decimal values, ranging from 1 to 255.

The program starts with the integer j set to 1. It then enters a while loop that continues as long as j is less than or equal to 255.

Inside the loop, it uses the printf function to print the character representation of j (using %c) and the decimal value of j (using %d), separated by a space. It then increments j by 1.

So, the output will start with non-printable ASCII characters (from 1 to 31), then it will print printable characters like space, numbers, letters, and special characters, and finally, it will print extended ASCII characters (from 128 to 255).

Please note that the output for characters from 1 to 31 and from 128 to 255 may vary depending on the system and terminal because they are non-printable and extended ASCII characters respectively.