commit 96dda067dc2d397bcc30aa8c0fddba9963ba3598
parent a9c53a0067912b3a3b490e21cc78d65a6efb3c0a
Author: Amit Dutta <amitdutta4255@gmail.com>
Date: Tue, 21 Oct 2025 18:51:16 +0530
new _luc
Diffstat:
4 files changed, 77 insertions(+), 0 deletions(-)
diff --git a/letusc/luc037.c b/letusc/luc037.c
@@ -0,0 +1,29 @@
+/* The natural logarithm can be approximated by the following series.
+ (x-1)/x + 1/2 ((x-1)/x)^2 + 1/2 ((x-1)/x)^3 + 1/2 ((x-1)/x)^4 + ...
+If x is input through the keyboard, write a program to calculate the
+sum of the first seven terms of this series. */
+/* Author - Amit Dutta, Date - 21th OCT, 2025 */
+/* Let Us C, Chap- 6, Page - 106, Qn No.: B(d) */
+
+#include <stdio.h>
+#include <math.h>
+
+double series(double x) // made this fn only for fun, making a fn was not necessary
+{
+ double result = (x - 1) / x;
+ int i;
+ for (i = 2; i <= 7; i++)
+ {
+ result += 0.5 * pow(((x - 1) / x), i);
+ }
+ return result;
+}
+
+int main()
+{
+ double x;
+ printf("Enter the value for x : ");
+ scanf("%lf", &x);
+ printf("\nResult : %g", series(x));
+ return 0;
+}+
\ No newline at end of file
diff --git a/letusc/luc038.c b/letusc/luc038.c
@@ -0,0 +1,26 @@
+/* Write a program to generate all Pythagorean Triplets with slide
+length less than or equal to 30. */
+/* Author - Amit Dutta, Date - 21th OCT, 2025 */
+/* Let Us C, Chap- 6, Page - 106, Qn No.: B(e) */
+
+#include <stdio.h>
+#include <math.h>
+
+int main()
+{
+ int a, b, c;
+ printf("Pythagorean Triplets with slide length less than or equal to 30 : \n");
+ for (a = 1; a <= 30; a++)
+ {
+ for (b = a; b <= 30; b++)
+ {
+ int c_square = a * a + b * b;
+ for (c = b + 1; c <= 30; c++)
+ {
+ if (c * c == c_square)
+ printf("(%d, %d, %d)\n", a, b, c);
+ }
+ }
+ }
+ return 0;
+}+
\ No newline at end of file
diff --git a/letusc/luc039.c b/letusc/luc039.c
@@ -0,0 +1,19 @@
+/* Population of a town today is 100000. The population has increased
+steadily at the rate of 10% per year for last 10 years. Write a
+program to determine the population at the end of each year in the
+last decade. */
+/* Author - Amit Dutta, Date - 21th OCT, 2025 */
+/* Let Us C, Chap- 6, Page - 106, Qn No.: B(f) */
+
+#include <stdio.h>
+int main()
+{
+ int i, population = 100000;
+ printf("Present year : %d\n", population);
+ for (i = 1; i <= 10; i++)
+ {
+ population /= 1.10;
+ printf("%d year ago : %d\n", i, population);
+ }
+ return 0;
+}+
\ No newline at end of file
diff --git a/letusc/luc039.exe b/letusc/luc039.exe
Binary files differ.
