ruslaniv
2/11/2020 - 6:39 PM

Matrix

Time delay

#include <iostream>
#include <iomanip>

int main () {
    int total_row, total_column;
    std::cout << "Enter number of rows in a matrix: ";
    std:: cin >> total_row;
    std::cout << "Enter number of columns in a matrix: ";
    std::cin >> total_column;
    std:: cout << "You have set a " << total_row << " x " << total_column << " matrix" << std::endl;
    int matrix [total_row][total_column];
    srand ((unsigned)time(NULL));
    for (int row = 0; row < total_row; row++) {
        for (int column = 0; column < total_column; column++) matrix[row][column] = std::rand() % 100;
    }
    for (int row = 0; row < total_row; row++) {
        for (int column = 0; column < total_column; column++) std::cout << std::setw(5) << std::right << matrix[row][column];
        std::cout << '\n';
    }
    return 0;
}
/ waiting.cpp -- using clock() in a time-delay loop
#include <iostream>
#include <ctime> // describes clock() function, clock_t type
int main()
{
    using namespace std;
    cout << "Enter the delay time, in seconds: ";
    float secs;
    cin >> secs;
    clock_t delay = secs * CLOCKS_PER_SEC;  // convert to clock ticks
    cout << "starting\a\n";
    clock_t start = clock();
    while (clock() - start < delay )        // wait until time elapses
        ;                                   // note the semicolon
    cout << "done \a\n";
    return 0;
}