Check if a File Exists in Python Without Exceptions
Use pathlib.Path.exists or os.path.isfile to test for a file without try/except.
Binary Search in C
Implement iterative binary search in C on a sorted array and return the index of the key.
C Program Using a Student Record Structure
Define a student struct in C with roll, name, and marks, then read and display records.
C Program to Check Prime Number
Test whether an integer is prime in C by checking divisors up to sqrt(n).
C Program to Print Day of Week (1 to 7)
Map integers 1–7 to weekday names in C using switch or if-else.
Check if a String Contains a Substring in JavaScript
Use includes, indexOf, or a regex test to check substrings in JavaScript — with case-sensitivity notes.
Simple Python Calculator Code
Build a small Python calculator that reads two numbers and an operator, then prints the result.
Python Program to Calculate the Area of a Triangle
Compute triangle area in Python from base and height, or from three sides with Heron’s formula.
C Program: Alternating Sign Power / Factorial Series
Sum a GTU-style series with alternating signs, powers, and factorials in C.
C Program: Count People by Height and Weight Conditions
Read height and weight for several people in C and count how many match a condition.