MaTran.c

#include <stdio.h>

int main()
{
    int n,m,i,j;
    float a[10][10];
    printf("Nhap so hang ma tran");
    scanf("%d", &m);
    printf("Nhap so cot ma tran");
    scanf("%d", &n);
    printf("\nNhap tung phan tu\n");
    for (i = 0; i < m; i++) {
        for (j = 0; j < n; j++) {
            printf("a[%d][%d]=", i, j);
            scanf("%f", &a[i][j]);
        }
    }
    // Neu co cai // thi la chu thich thoi, k chep nhe.
    //Cau 2
    //chep nguyen 2 cai for cua de bai, sua printf va xoa scanf
    for (i = 0; i < m; i++) {
        for (j = 0; j < n; j++) {
            //cai printf co them mot cai %f voi a[i][j] nua, chinh la gia tri cua tung phan tu.
            //%f vi kieu du lieu cua phan tu la float
            printf("a[%d][%d]= %f\n", i, j, a[i][j]);
        }
    }
    //Cau 3 
    //De yc in gtri cua hang cuoi cung, nen minh se for tu 0 den het so cot
    float sum = 0; //cai sum nay de tinh tong, float la kieu du lieu
    for (i = 0; i < n; i++) {
        //m-1 la index cua hang cuoi cung. += de cong them vao cai sum.
        sum += a[m-1][i];
    }
    //in ra cai sum
    printf("%f", sum);
}