Prog. Lab 7. N23

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main() {
    printf("Avtor - Klipikov A.V., student gr, PIbd-11\n");
    printf("Variant N23\n");
    printf("Dana matrica A (n*n). Elementi teh strok, u kotorih na glavnoi diagonali nahoditsya nulevoi element, zamenit' na elementi massiva B\n");
    printf("Ishodnaya matrica A:\n");

    const int n = 3;
    int a[n][n], b[n];
    srand(time(NULL));
    for (int i = 0; i < n; i++) {
        for(int j = 0; j < n; j++) {
            a[i][j] = rand() % 10 - 4;
            printf("%d ", a[i][j]);
        }
        printf("\n");
    }

    printf("\nIshodniy massiv B:\n");
    for (int i = 0; i < n; i++) {
        b[i] = rand() % 10 - 4;
        printf("%d ", b[i]);
    }
    printf("\n");

    for(int i = 0; i < n; i++) {
        if (a[i][i] == 0) {
            for(int k = 0; k < n; k++)
                a[i][k] = b[k];
        }
    }

    for(int i = 0; i < n; i++) {
        a[0][i] += a[n-1][i];
        a[n-1][i] = a[0][i] - a[n-1][i];
        a[0][i] -= a[n-1][i];
    }

    printf("\nObnovlennaya matrica:\n");
    for (int i = 0; i < n; i++) {
        for(int j = 0; j < n; j++) {
            printf("%d ", a[i][j]);
        }
        printf("\n");
    }

    return 0;
}