Question

design an algorithm(pseudocode or C) from the content of a table, we want to generate an array of the same number of rows and columns as the measure of the vector. In the first row of the new matrix we will copy the vector and in the following we will do the same.

Since some of the positions have to be at 0, it is best to initialize the entire array to 0 first.

Table indices ** are always integer values ​​**.

example

|Vector||||
|:--:|:--:|:--:|:--:|
| 4 | 3 | 2 | 1 |

|Matrix||||
|:--:|:--:|:--:|:--:|
| 4 | 3 | 2 | 1 |
| 0 | 3 | 2 | 1 |
| 0 | 0 | 2 | 1 |
| 0 | 0 | 0 | 1 |

Answer 1

Output:

CODE:

#include<stdio.h>

int main()

{

int n;

//get the number of items from the user

printf("Enter the number of elements in the vector\n");

scanf("%d",&n);

printf("Enter %d items\n",n);

int vector[n];

//input n elements of the vector

for(int i=0;i<n;i++)

{

scanf("%d",&vector[i]);

}

//create a n*n matrix

int matrix[n][n];

//initialize the matrix to 1

for(int i=0;i<n;i++)

{

for(int j=0;j<n;j++)

{

matrix[i][j]=0;

}

}

//desired values in the matrix

for(int i=0;i<n;i++)

{

//start j loop from j=i to n

for(int j=i;j<n;j++)

{

matrix[i][j]=vector[j];

}

}

//print the matrix

printf("Matrix is\n");

for(int i=0;i<n;i++)

{

for(int j=0;j<n;j++)

{

printf("%d ",matrix[i][j]);

}

printf("\n");

}

return 0;

}