Histogram

Histogram in C

The histogram is a type of bar chart that splits a continuous measure into different bins to help analyze the distribution. Here's a step-by-step explanation of how to create a histogram in C:

1. Include Necessary Libraries:
2. Include the necessary libraries for input/output and mathematical operations.

3. Example: c #include <stdio.h> #include <math.h>

4. Define the Number of Bins:

5. Determine the number of bins to use for the histogram.

6. Example: c #define NUM_BINS 10

7. Initialize Data and Bin Counts:

8. Initialize an array to hold the data and another array to count the occurrences in each bin.

9. Example: c int data[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; // Example data int binCounts[NUM_BINS] = {0}; // Initialize bin counts to 0

10. Calculate Bin Index and Update Counts:

11. Iterate through the data, calculate the bin index for each value, and update the corresponding bin count.

12. Example: c for (int i = 0; i < 10; i++) { int binIndex = data[i] / (10 / NUM_BINS); // Calculate bin index binCounts[binIndex]++; // Update bin count }

13. Display the Histogram:

14. Print the histogram using asterisks to represent the frequency in each bin.

15. Example: c for (int i = 0; i < NUM_BINS; i++) { printf("%2d - %2d: ", i (10 / NUM_BINS), (i + 1) (10 / NUM_BINS) - 1); for (int j = 0; j < binCounts[i]; j++) { printf("*"); } printf("\n"); }

16. Complete Code Example:

17. Here's a complete example of a simple histogram implementation in C: ```c #include

    #define NUM_BINS 10

    int main() { int data[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; int binCounts[NUM_BINS] = {0};

     for (int i = 0; i < 10; i++) {
         int binIndex = data[i] / (10 / NUM_BINS);
         binCounts[binIndex]++;
     }
    
     for (int i = 0; i < NUM_BINS; i++) {
         printf("%2d - %2d: ", i  (10 / NUM_BINS), (i + 1)  (10 / NUM_BINS) - 1);
         for (int j = 0; j < binCounts[i]; j++) {
             printf("*");
         }
         printf("\n");
     }
    
     return 0;
    

    } ```

This code example demonstrates the basic steps to create a histogram in C, from initializing the data and bin counts to displaying the histogram.