Write a program in c to check whether given matrix is prime matrix?

Answer 1

A prime matrix is defined as a matrix where all its elements are prime numbers. To check if a given matrix is a prime matrix in C, you can iterate through each element of the matrix, check if each number is prime using a helper function, and return false if any number is not prime. Here's a simple implementation:

#include <stdio.h>

int isPrime(int num) {
    if (num <= 1) return 0;
    for (int i = 2; i * i <= num; i++) {
        if (num % i == 0) return 0;
    }
    return 1;
}

int isPrimeMatrix(int matrix[3][3], int rows, int cols) {
    for (int i = 0; i < rows; i++)
        for (int j = 0; j < cols; j++)
            if (!isPrime(matrix[i][j])) return 0;
    return 1;
}

int main() {
    int matrix[3][3] = {{2, 3, 5}, {7, 11, 13}, {17, 19, 23}};
    printf(isPrimeMatrix(matrix, 3, 3) ? "Prime Matrix\n" : "Not a Prime Matrix\n");
    return 0;
}