Error Handling in C Definition Error Handling in C is the process of detecting, reporting, and handling errors that occur during program execution so that the program does not terminate unexpectedly. Unlike some programming languages, C does not provide built-in exception handling (such as try, catch, or throw). Instead, errors are handled using return values, … Read more
Definition A Storage Class in C defines where a variable is stored, its lifetime, its scope (visibility), and its default initial value. There are 4 types of Storage Classes in C: 1. Auto Storage Class (auto) Definition The auto storage class is the default storage class for all local variables declared inside a function. If … Read more
Preprocessor Directives are special instructions processed by the C preprocessor before the actual compilation begins. They start with the # symbol and do not end with a semicolon (;). Common Preprocessor Directives 1. #include Used to include header files in a C program. Syntax: Example: 2. #define Used to define constants or macros. Syntax: Example: … Read more
Command Line Arguments are values passed to a program when it is executed from the command line. They allow users to provide input without using functions like scanf(). Syntax or Explanation Example Program Sample Execution Compile: Run: Output Example: Adding Two Numbers Using Command Line Arguments Sample Execution Output: Advantages
Dynamic Memory Allocation (DMA) is the process of allocating memory during the execution of a program (at runtime) instead of at compile time. It allows programs to request memory as needed, making memory usage more efficient. Why Dynamic Memory Allocation is Needed Dynamic Memory Allocation Functions in C The <stdlib.h> header file provides four functions: … Read more
What is File Handling? File Handling is the process of creating, opening, reading, writing, appending, and closing files in a program. It allows data to be stored permanently, even after the program ends. Definition File handling in C is the process of storing and retrieving data from files using file operations. Why Do We Need … Read more
1. Structure in C Definition A structure is a user-defined data type that allows us to store different types of data under a single name. For example, a student’s record contains: Since these are different data types, we use a structure. Syntax Example Program Note: To use strcpy(), include the header file: Output Memory Representation … Read more