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Programming Language C
Assemblers: An assembler is a program that translates an assembly language program into machine language. Compilers: A compiler is a language processor that translates an entire high-level language program into a machine language version of these programs in a single process. If no programming errors exist in the source code, the program becomes operative. Interpreters: An interpreter is a language processor that translates and executes high-level language. Instructions on instruction statement at a time and if errors are detected in the source code, the in interpreter displays immediate feedback on the screen. Variable: The most fundamental of all concepts in C is the variable. A variable is a like a small box. You can store things in the box for later use particularly numbers. The concept of a variable is use from mathematics. A statement such as X=1. Integer (Int.): Integers are also known as counting numbers or whole numbers. Integers are whole numbers with range of values supported by a particular machine. All C compilers support four fundamental data types namely integer (int), character (char), floating point (float) and double-precision floating point (double). Many of then also offer extended data types such as long int. and long double. Float: Floating-point numbers are defining in C by the key word float. Character: A single character can be defined a character (char) type data. About using some C statement: A program can contain one or many functions but must always have a function called “main”. The “main” functions is the starting point of all C programs and the compiler will not compile the code unless it finds a function called “main” within the program. The plain brackets that follow the function name can optionally contain values to be use by that function. These take the form of a comma-separated list and are know as function “arguments”. The curly brackets (braces) contain the statements to be executing whenever the functions to be execute. A semi-colon must terminate each statement in the same way that a semi-colon must terminate English language sentences, in the same way that English language sentences must be terminate by a full stop. Program code: #include<stdio.h> #include <conio.h> Void main ( ) { printf { “Hello Nari Jibon\n”}; } The program code begins with an instruction to the compiler to include information from the standard input or output library, stdio and the “.h” files are by convention “header files”. The # character starts the line to denote a preprocessor instruction. Notice that the name of the library must be enclosing by <and> angled brackets. In the function declaration, the data type is specifying as int., meaning integer. This means that after executing its statements this function must return an integer value to the operating system. To write a C Program adds any two digits: #include<stdio.h> #include<conio.h> void main () { int a,b,sum; clrscr (); printf (“enter the first number:\n”); scanf (“%d”, &a); printf (“enter the second number:\n”); scanf (“%d”, &b); sum = a+b; printf (“result is: %d”, sum); getch (); } One of these is a function named scanf() that is used to write the input of a program and another one is printf() that is used to write the output from a program. The “&” character, in this case, is the “addressof” operator that directs the input to be stored in the variable name that it precedes and “%d” represents the integer value. “\n” prints a “new line” character, which brings the cursor onto the next line. continuing Taslima Akter |
animesh |
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Nari Jibon Project |
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