C Exercises: Print the powers of 2 table for the power 0 to 10

C Basic Declarations and Expressions: Exercise-68 with Solution

Write a C program to print the powers of 2 table for the power 0 to 10, both positive and negative.

Sample Solution:

C Code:

#include<stdio.h>
  int main() {
    long int p;
    int n;
    double q;
    printf("\n=======================================");
    printf("\n n    2 to power n      2 to power -n");
    printf("\n=======================================");
    p = 1;
    for (n = 0; n < 11; ++n) {
      if (n == 0)
        p = 1;
      else
        p = p * 2;
      q = 1.0 / (double) p;
      printf("\n%2d   %8d     %20.12lf", n, p, q);
    }
    printf("\n======================================");
    return 0;
  }

Sample Output:

=======================================
 n    2 to power n      2 to power -n
=======================================
 0          1           1.000000000000
 1          2           0.500000000000
 2          4           0.250000000000
 3          8           0.125000000000
 4         16           0.062500000000
 5         32           0.031250000000
 6         64           0.015625000000
 7        128           0.007812500000
 8        256           0.003906250000
 9        512           0.001953125000
10       1024           0.000976562500
======================================

Flowchart:

C programming Code Editor:

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