Matrix

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In C, matrices are typically represented as 2D arrays. Here’s an example of how you can define and initialize a 2D array for a matrix

Project 1

#include <stdio.h>

int main()
{
    int point[3][5] = {
        {4, 14, 6, 11, -5},
        {-12, 7, 5, 3, -9},
        {10, -32, 1, 0, 15}};
    printf("Point\n");
    for (int i = 0; i < 3; i++)
    {
        for (int j = 0; j < 5; j++)
        {
            printf("%d\t", point[i][j]);
        }
        printf("\n");
    }
}

Output :

Point
4       14      6       11      -5
-12     7       5       3       -9
10      -32     1       0       15

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Project 2

#include <stdio.h>

int main()
{
    int point[3][5] = {
        {4, 14, 6, 11, -5},
        {-12, 7, 5, 3, -9},
        {10, -32, 1, 0, 15}};
    int min = point[0][0];
    int max = point[0][0];

    printf("Point\n");
    for (int i = 0; i < 3; i++)
    {
        for (int j = 0; j < 5; j++)
        {
            printf("%d\t", point[i][j]);
            if (min > point[i][j])
            {
                min = point[i][j];
            }
            else if (max < point[i][j])
            {
                max = point[i][j];
            }
        }
        printf("\n");
    }
    printf("Mininum number : %d\n",min);
    printf("Maxinum number : %d\n",max);
}

Output :

Point
4       14      6       11      -5
-12     7       5       3       -9
10      -32     1       0       15
Mininum number : -32
Maxinum number : 15

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Project 3

#include <stdio.h>

int main()
{
    int table[3][4] = {
        {500, 420, 366, 207},
        {611, 485, 382, 301},
        {877, 745, 592, 473}
    };
    int row_sum[3] = {0};
    printf("Table number of students in faculty\n");
    for (int i = 0; i < 3; i++)
    {
        for (int j = 0; j < 4; j++)
        {
            printf("%d\t",table[i][j]);
            row_sum[i] += table[i][j];
        }
        printf("\n");
    }
    printf("Total of Engineer: %d\n", row_sum[0]);
    printf("Total of Business: %d\n", row_sum[1]);
    printf("Total of Art : %d\n", row_sum[2]);
}

Output :

Table number of students in faculty
500     420     366     207
611     485     382     301
877     745     592     473
Total of Engineer: 1493
Total of Business: 1779
Total of Art : 2687

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