More Problems

• Write a program to print all elements in the first and last columns divisible by both 7 and 9.
• Write a program to replace all odd numbers in the matrix with 0 and even numbers with -1.
• Write a program to replace all prime numbers in the matrix with 1 and composite numbers with -1.
• Write a program to print all diagonal elements in a square matrix that are divisible by 4.
• Write a program to print all border elements in a square matrix that are divisible by 6.
• Write a program to check if the sum of all elements in the first diagonal is a multiple of 7.
• Write a program to check if the sum of all elements in the second diagonal is a multiple of 11.
• Write a program to print the matrix in a triangular zigzag pattern starting from the center.