Basic Structure of C Language and Related Term
- 1. Basic Structure of C Language and Related Term By:Prof.Muhammad Waseem
- 2. Importance of Programming & Problem Solving • Here are some of the things that learning coding can empower someone to do- • ToMake someone’s Own Website. • Become a Career Coder. • Start a Business • Some of the kinds of businesses you can start include… selling software selling mobile apps e-commerce selling your coding time. ToUnderstand How Computers Work and so more.
- 3. HEADER FILE • A header file is a file with extension .h which contains C function declarations . • There are two types of header files : Files that the programmer writes and Files that comes with a compiler. • For Example: stdio.h header file contains standard Input and Output functions. string.h header file contains string handling functions.
- 4. Main function • main() function is the entry point of any C program; • It is the point at which execution of program is started; • When a C program is executed, the execution control goes directly to the main() function. • Every C program have a main() function. • It’s a compulsory for c program.
- 5. Simple example of a program
- 6. Program Structure • A sample of c program- #include<stdio.h> int main() { -----Statements---- // comments after double slash }
- 8. Comments in c • A comment is a programmer-readable explanation; • They are added with the purpose of making the source code easier for humans to understand, and are generally ignored by compilers and interpreters. • Example- • Single line comment- //(double slash); Multiline comment- /*--------- ------*/ • This can span over to multiple line;
- 9. Keywords in C Language
- 10. variables • Variables are data that will keep on changing. A variable is nothing but a name given to a storage area that our programs can manipulate. • Declaration <<Data type>> <<variable name>>; int a; • Definition <<varname>>=<<value>>; a=10; • Usage a=a+1; //increments the value of a by 1
- 12. Constants • Constants refer to fixed values that the program may not alter during its execution. These fixed values are also called literals. • Given below is the form to use #define preprocessor to define a • const • #define identifier value
- 13. Thanks!