commit b273b036854853c24587db079105fcf061d700bd
parent 5e2359d295ebf590ede57cd95ce7997cf79a5dd3
Author: Amit Dutta <amitdutta4255@gmail.com>
Date: Sun, 23 Nov 2025 12:19:33 +0530
new -23112025 .\letusc\lucproblem014, short(14)
Diffstat:
3 files changed, 361 insertions(+), 1 deletion(-)
diff --git a/docs/index.html b/docs/index.html
@@ -892,7 +892,7 @@ int main()
<div class="flex items-center">
<svg class="w-6 h-6 text-blue-500 mr-4 flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 7v10a2 2 0 002 2h14a2 2 0 002-2V9a2 2 0 00-2-2h-6l-2-2H5a2 2 0 00-2 2z"></path></svg>
<span class="font-medium text-gray-800">letusc</span>
- <span class="ml-2 text-sm text-gray-500">(62 files)</span>
+ <span class="ml-2 text-sm text-gray-500">(64 files)</span>
</div>
<div class="flex items-center space-x-4">
<a href="https://github.com/notamitgamer/bsc/tree/main/letusc" target="_blank" class="p-1 rounded-full text-gray-500 hover:bg-gray-200 hover:text-gray-800 transition-colors" onclick="event.stopPropagation()" title="View folder on GitHub">
@@ -4243,6 +4243,200 @@ int main()
}</code></pre>
</div>
</li>
+
+ <li>
+ <div class="flex items-center p-3 pl-8 hover:bg-gray-50 transition-colors duration-200">
+ <svg class="w-6 h-6 text-green-500 mr-4 flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 21h10a2 2 0 002-2V9.414a1 1 0 00-.293-.707l-5.414-5.414A1 1 0 0012.586 3H7a2 2 0 00-2 2v14a2 2 0 002 2z"></path></svg>
+ <span class="text-gray-700">lucproblem014-short.c</span>
+ <div class="ml-auto flex items-center space-x-4">
+ <a href="https://github.com/notamitgamer/bsc/blob/main/letusc/lucproblem014-short.c" target="_blank" class="p-1 rounded-full text-gray-500 hover:bg-gray-200 hover:text-gray-800 transition-colors" title="View file on GitHub">
+ <svg class="w-6 h-6" fill="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path fill-rule="evenodd" d="M12 2C6.477 2 2 6.477 2 12c0 4.418 2.865 8.168 6.839 9.492.5.092.682-.217.682-.482 0-.237-.009-.868-.014-1.703-2.782.605-3.369-1.343-3.369-1.343-.454-1.158-1.11-1.466-1.11-1.466-.908-.62.069-.608.069-.608 1.003.07 1.531 1.032 1.531 1.032.892 1.53 2.341 1.088 2.91.832.092-.647.35-1.088.636-1.338-2.22-.253-4.555-1.113-4.555-4.951 0-1.093.39-1.988 1.031-2.688-.103-.253-.446-1.272.098-2.65 0 0 .84-.27 2.75 1.026A9.564 9.564 0 0112 6.844c.85.004 1.705.115 2.504.337 1.909-1.296 2.747-1.027 2.747-1.027.546 1.379.203 2.398.1 2.651.64.7 1.03 1.595 1.03 2.688 0 3.848-2.338 4.695-4.566 4.942.359.308.678.92.678 1.855 0 1.338-.012 2.419-.012 2.747 0 .268.18.58.688.482A10.001 10.001 0 0022 12c0-5.523-4.477-10-10-10z" clip-rule="evenodd"></path></svg>
+ </a>
+ <button onclick="showCode('code-letusc-lucproblem014-short_c', 'lucproblem014-short.c')" class="text-green-600 font-semibold text-sm hover:underline">View Code</button>
+ </div>
+ </div>
+ <div id="code-letusc-lucproblem014-short_c" class="hidden" data-github-url="https://github.com/notamitgamer/bsc/blob/main/letusc/lucproblem014-short.c">
+ <pre><code class="language-c">/* Write a function that receives integers and returns the sum, average
+and standard deviation of these numbers. Call this function from main()
+and print the result in main() */
+/* Author - Amit Dutta, Date - 23th November, 2025 */
+/* Let Us C, Chap - 9, Page 159, Problem 9.1 */
+
+#include <stdio.h>
+#include <math.h>
+
+void stats(double *, double *, double *);
+
+int main()
+{
+ double sum, average, standardDeviation;
+ stats(&sum, &average, &standardDeviation);
+
+ printf("\n--- Stats ---"
+ "\nSum: %g"
+ "\nAverage: %g"
+ "\nStandard Deviation: %g",
+ sum, average, standardDeviation);
+ return 0;
+}
+
+void stats(double *sum, double *average, double *standardDeviation)
+{
+ int n;
+ printf("How many numbers you want to give input: ");
+ scanf("%d", &n);
+
+ double inputNumber[n];
+ int i;
+
+ printf("\n--- Enter Numbers ---\n");
+ for (i = 0; i < n; i++)
+ {
+ printf("Enter number %d: ", i + 1);
+ scanf("%lf", &inputNumber[i]);
+ }
+
+ double tempSum = 0;
+ for (i = 0; i < n; i++)
+ tempSum += inputNumber[i];
+
+ double tempAverage = tempSum / n;
+
+ double tempStandardDeviation = 0.0;
+
+ if (n > 1)
+ {
+ double tempSumation = 0;
+ for (i = 0; i < n; i++)
+ tempSumation += pow((inputNumber[i] - tempAverage), 2.0);
+
+ tempStandardDeviation = sqrt(tempSumation / (n - 1));
+ }
+
+ *sum = tempSum;
+ *average = tempAverage;
+ *standardDeviation = tempStandardDeviation;
+}</code></pre>
+ </div>
+ </li>
+
+ <li>
+ <div class="flex items-center p-3 pl-8 hover:bg-gray-50 transition-colors duration-200">
+ <svg class="w-6 h-6 text-green-500 mr-4 flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 21h10a2 2 0 002-2V9.414a1 1 0 00-.293-.707l-5.414-5.414A1 1 0 0012.586 3H7a2 2 0 00-2 2v14a2 2 0 002 2z"></path></svg>
+ <span class="text-gray-700">lucproblem014.c</span>
+ <div class="ml-auto flex items-center space-x-4">
+ <a href="https://github.com/notamitgamer/bsc/blob/main/letusc/lucproblem014.c" target="_blank" class="p-1 rounded-full text-gray-500 hover:bg-gray-200 hover:text-gray-800 transition-colors" title="View file on GitHub">
+ <svg class="w-6 h-6" fill="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path fill-rule="evenodd" d="M12 2C6.477 2 2 6.477 2 12c0 4.418 2.865 8.168 6.839 9.492.5.092.682-.217.682-.482 0-.237-.009-.868-.014-1.703-2.782.605-3.369-1.343-3.369-1.343-.454-1.158-1.11-1.466-1.11-1.466-.908-.62.069-.608.069-.608 1.003.07 1.531 1.032 1.531 1.032.892 1.53 2.341 1.088 2.91.832.092-.647.35-1.088.636-1.338-2.22-.253-4.555-1.113-4.555-4.951 0-1.093.39-1.988 1.031-2.688-.103-.253-.446-1.272.098-2.65 0 0 .84-.27 2.75 1.026A9.564 9.564 0 0112 6.844c.85.004 1.705.115 2.504.337 1.909-1.296 2.747-1.027 2.747-1.027.546 1.379.203 2.398.1 2.651.64.7 1.03 1.595 1.03 2.688 0 3.848-2.338 4.695-4.566 4.942.359.308.678.92.678 1.855 0 1.338-.012 2.419-.012 2.747 0 .268.18.58.688.482A10.001 10.001 0 0022 12c0-5.523-4.477-10-10-10z" clip-rule="evenodd"></path></svg>
+ </a>
+ <button onclick="showCode('code-letusc-lucproblem014_c', 'lucproblem014.c')" class="text-green-600 font-semibold text-sm hover:underline">View Code</button>
+ </div>
+ </div>
+ <div id="code-letusc-lucproblem014_c" class="hidden" data-github-url="https://github.com/notamitgamer/bsc/blob/main/letusc/lucproblem014.c">
+ <pre><code class="language-c">/* Write a function that receives integers and returns the sum, average
+and standard deviation of these numbers. Call this function from main()
+and print the result in main() */
+/* Author - Amit Dutta, Date - 23th November, 2025 */
+/* Let Us C, Chap - 9, Page 159, Problem 9.1 */
+
+#include <stdio.h>
+#include <math.h>
+
+// Function prototype: Using pointers for 'call by reference' to return 3 values.
+void stats(double *, double *, double *);
+
+int main()
+{
+ double sum, average, standardDeviation;
+ // Passing addresses of variables to receive results from the function.
+ stats(&sum, &average, &standardDeviation);
+
+ printf("\n--- Stats ---"
+ "\nSum: %g"
+ "\nAverage: %g"
+ "\nStandard Deviation: %g",
+ sum, average, standardDeviation);
+ return 0;
+}
+
+// Function to calculate statistics on user-provided numbers.
+void stats(double *sum, double *average, double *standardDeviation)
+{
+ int n;
+ // Input Validation Loop for N
+ do
+ {
+ printf("How many numbers you want to give input: ");
+
+ if (scanf("%d", &n) == 1)
+ {
+ break;
+ }
+ else
+ {
+ printf("\nPlease enter a valid number.\n");
+ // Clearing input buffer to handle invalid input
+ while (getchar() != '\n' && !feof(stdin))
+ ;
+ }
+ } while (1);
+
+ // Variable-Length Array (VLA) to store the input numbers.
+ double inputNumber[n];
+ int i = 0;
+
+ printf("\n--- Enter Numbers ---\n");
+
+ // Input Loop for numbers
+ while (i < n)
+ {
+ printf("Enter number %d: ", i + 1);
+
+ if (scanf("%lf", &inputNumber[i]) == 1)
+ {
+ // Clearing input buffer after successful read
+ while (getchar() != '\n')
+ ;
+ i++;
+ }
+ else
+ {
+ printf("Invalid input. Only integers are allowed. Please try again.\n");
+ // Clearing input buffer to handle invalid input
+ while (getchar() != '\n' && !feof(stdin))
+ ;
+ }
+ }
+
+ // 1. Sum Calculation
+ double tempSum = 0;
+ for (i = 0; i < n; i++)
+ tempSum += inputNumber[i];
+
+ // 2. Average (Mean) calculation
+ double tempAverage = tempSum / n;
+
+ // 3. Standard Deviation (Sample SD formula used)
+ double tempStandardDeviation = 0.0;
+
+ // Preventing division by zero if n is 1. SD is 0 for a single number.
+ if (n > 1)
+ {
+ double tempSumation = 0;
+ // calculating the sum of squared differences from the mean
+ for (i = 0; i < n; i++)
+ tempSumation += pow((inputNumber[i] - tempAverage), 2.0);
+
+ // Calculating sample standard deviation
+ tempStandardDeviation = sqrt(tempSumation / (n - 1));
+ }
+
+ // Assigning final values back to the variables in main().
+ *sum = tempSum;
+ *average = tempAverage;
+ *standardDeviation = tempStandardDeviation;
+}</code></pre>
+ </div>
+ </li>
</ul>
</div>
</li>
diff --git a/letusc/lucproblem014-short.c b/letusc/lucproblem014-short.c
@@ -0,0 +1,61 @@
+/* Write a function that receives integers and returns the sum, average
+and standard deviation of these numbers. Call this function from main()
+and print the result in main() */
+/* Author - Amit Dutta, Date - 23th November, 2025 */
+/* Let Us C, Chap - 9, Page 159, Problem 9.1 */
+
+#include <stdio.h>
+#include <math.h>
+
+void stats(double *, double *, double *);
+
+int main()
+{
+ double sum, average, standardDeviation;
+ stats(&sum, &average, &standardDeviation);
+
+ printf("\n--- Stats ---"
+ "\nSum: %g"
+ "\nAverage: %g"
+ "\nStandard Deviation: %g",
+ sum, average, standardDeviation);
+ return 0;
+}
+
+void stats(double *sum, double *average, double *standardDeviation)
+{
+ int n;
+ printf("How many numbers you want to give input: ");
+ scanf("%d", &n);
+
+ double inputNumber[n];
+ int i;
+
+ printf("\n--- Enter Numbers ---\n");
+ for (i = 0; i < n; i++)
+ {
+ printf("Enter number %d: ", i + 1);
+ scanf("%lf", &inputNumber[i]);
+ }
+
+ double tempSum = 0;
+ for (i = 0; i < n; i++)
+ tempSum += inputNumber[i];
+
+ double tempAverage = tempSum / n;
+
+ double tempStandardDeviation = 0.0;
+
+ if (n > 1)
+ {
+ double tempSumation = 0;
+ for (i = 0; i < n; i++)
+ tempSumation += pow((inputNumber[i] - tempAverage), 2.0);
+
+ tempStandardDeviation = sqrt(tempSumation / (n - 1));
+ }
+
+ *sum = tempSum;
+ *average = tempAverage;
+ *standardDeviation = tempStandardDeviation;
+}+
\ No newline at end of file
diff --git a/letusc/lucproblem014.c b/letusc/lucproblem014.c
@@ -0,0 +1,103 @@
+/* Write a function that receives integers and returns the sum, average
+and standard deviation of these numbers. Call this function from main()
+and print the result in main() */
+/* Author - Amit Dutta, Date - 23th November, 2025 */
+/* Let Us C, Chap - 9, Page 159, Problem 9.1 */
+
+#include <stdio.h>
+#include <math.h>
+
+// Function prototype: Using pointers for 'call by reference' to return 3 values.
+void stats(double *, double *, double *);
+
+int main()
+{
+ double sum, average, standardDeviation;
+ // Passing addresses of variables to receive results from the function.
+ stats(&sum, &average, &standardDeviation);
+
+ printf("\n--- Stats ---"
+ "\nSum: %g"
+ "\nAverage: %g"
+ "\nStandard Deviation: %g",
+ sum, average, standardDeviation);
+ return 0;
+}
+
+// Function to calculate statistics on user-provided numbers.
+void stats(double *sum, double *average, double *standardDeviation)
+{
+ int n;
+ // Input Validation Loop for N
+ do
+ {
+ printf("How many numbers you want to give input: ");
+
+ if (scanf("%d", &n) == 1)
+ {
+ break;
+ }
+ else
+ {
+ printf("\nPlease enter a valid number.\n");
+ // Clearing input buffer to handle invalid input
+ while (getchar() != '\n' && !feof(stdin))
+ ;
+ }
+ } while (1);
+
+ // Variable-Length Array (VLA) to store the input numbers.
+ double inputNumber[n];
+ int i = 0;
+
+ printf("\n--- Enter Numbers ---\n");
+
+ // Input Loop for numbers
+ while (i < n)
+ {
+ printf("Enter number %d: ", i + 1);
+
+ if (scanf("%lf", &inputNumber[i]) == 1)
+ {
+ // Clearing input buffer after successful read
+ while (getchar() != '\n')
+ ;
+ i++;
+ }
+ else
+ {
+ printf("Invalid input. Only integers are allowed. Please try again.\n");
+ // Clearing input buffer to handle invalid input
+ while (getchar() != '\n' && !feof(stdin))
+ ;
+ }
+ }
+
+ // 1. Sum Calculation
+ double tempSum = 0;
+ for (i = 0; i < n; i++)
+ tempSum += inputNumber[i];
+
+ // 2. Average (Mean) calculation
+ double tempAverage = tempSum / n;
+
+ // 3. Standard Deviation (Sample SD formula used)
+ double tempStandardDeviation = 0.0;
+
+ // Preventing division by zero if n is 1. SD is 0 for a single number.
+ if (n > 1)
+ {
+ double tempSumation = 0;
+ // calculating the sum of squared differences from the mean
+ for (i = 0; i < n; i++)
+ tempSumation += pow((inputNumber[i] - tempAverage), 2.0);
+
+ // Calculating sample standard deviation
+ tempStandardDeviation = sqrt(tempSumation / (n - 1));
+ }
+
+ // Assigning final values back to the variables in main().
+ *sum = tempSum;
+ *average = tempAverage;
+ *standardDeviation = tempStandardDeviation;
+}+
\ No newline at end of file
