Question

Assignment Input from the user 9, 64-bit, floating-point values as a 3x3, row-major, multi-dimensional array. This will be the 3x3 matrix. Then, input 3, 64-bit, floating-point values. This will be a single-dimensional array and is the vector. Your program will simply ask the user to enter matrix values. Remember, there are 9 of these, but they need to be stored into a 3x3 multi-dimensional array (row-major). Then, your program will ask for the vector values, which will be stored into a single-dimensional array. Afterwards, your program will give the resultant vector after multiplying the matrix with the vector. input another quit the program. If the After the result is printed to the user, you must ask the user whether they want to calculation. If the user types y, repeat the program. If the user types n, user inputs anything other than y or n repeat the prompt You may not input each individual element one-by-one. Instead, you must use two nested loops with a single cin statement to input to your matrix. Do the same, except with a single loop, for the vector. When you calculate your result, you must use two nested loops to make the calculation

Answer 1

ans...............................

#include <iostream>
using namespace std;
int main()
{
//Declare a matrix array
double matrix[3][3];
//Declare a vector array
double vector[3];
//Varible for sum
double result=0;
//Variable for continuation
char ch;
//Loop until user choose no
while (true) {
result = 0;
//Input matrix values
cout << "Enter matrix values: ";
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
cin >> matrix[i][j];
}
}
//Input vector values
cout << "Enter vector values: ";
for (int i = 0; i < 3; i++) {
cin >> vector[i];
}
//Print result vector
cout << "Result = [";
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
result += matrix[i][j] * vector[i];
}
if (i < 2) {
cout << result << ", ";
result = 0;
}
else {
cout << result << "]" << endl;
}
}
//Loop repetition question
cout << "Go again (y/n)? ";
cin >> ch;
//Error check
while (ch != 'y' && ch != 'Y' && ch != 'n' && ch != 'N') {
cout << "Go again (y/n)? ";
cin >> ch;
}
//If not exit
if (ch == 'N' || ch == 'n') {
break;
}
}
  
}
output:

HSave Debug | Stop @Share {} Beautify Run main.cpp OnlineGDB 1 beta 2 //Header files #include tinstream> online compiler and debugger for c/c++ input code. compile Enter matrix values: 1.5 0 0 0 2.5 0 0 05 run.debug Enter vector values: 10 20 30 share Result = [15, 50, 150] IDE Go again (y/n) ? k Go again (y/n) ? j Go again (y/n) ? y Enter matrix values: 1 0 0 0 20 0 0 3 My Projects Learn Programming Enter vector values: 10 20 30 Programmin Result = [10, 40, 90] Questions Go again (y/n) ? n We are Hiring Sign Up . Program finished with exit code 0 |Press ENTER to exit console. Login About FAQ Blog Terms of Use Contact Us GDB Tutorial Credits C) 2016 - 2019