C - Write program to output table of reciprocals, squares, cubes, and fourth powers.

  1. HOME
  2. C
  3. Array
  4. Array Introduction

Requirements

Define a two-dimensional array, data[11][5], of type double.

Initialize the elements in the first column with values from 2.0 to 3.0 inclusive in steps of 0.1.

If the first element in a row has value x, populate the remaining elements in each row with the values 1/x, x*x , x*x*x , and x*x*x*x.

Output the values in the array with each row on a separate line and with a heading for each column.

Demo

#include <stdio.h>

int main(void)
{
  const size_t nrows = 11;              // Number of rows in the array
  const size_t ncols = 5;               // Number of columns in the array
  double data[nrows][ncols];            // Stores data values
  double value = 2.0;                   // Value to be stored in array

  for (size_t row = 0; row < nrows; ++row)
  {/*from   w  w w.jav  a 2s.co  m*/
    data[row][0] = value;
    data[row][1] = 1.0 / data[row][0];               // 1/x
    data[row][2] = data[row][0] * data[row][0];      // x*x
    data[row][3] = data[row][2] * data[row][0];      // x*x*x
    data[row][4] = data[row][3] * data[row][0];      // x*x*x*x
    value += 0.1;
  }


  printf("            x  ");
  printf("          1/x  ");
  printf("          x*x  ");
  printf("         x*x*x ");
  printf("        x*x*x*x");

  for (size_t row = 0; row < nrows; ++row)
  {
    printf("\n");
    for (size_t col = 0; col < ncols; ++col)
      printf("%15.4lf", data[row][col]);
  }

  printf("\n");
  return 0;
}

Result

Related Exercise