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#Include

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Saurabh Chauhan
Saurabh Chauhan

The document discusses code for a simple C program that prints "C Programming" using the printf function. It explains that #include directives tell the preprocessor to include header files containing function declarations. The #include<iostream> line includes declarations for standard input/output, while #include<stdio.h> is needed for printf. The main function contains the printf statement to display the text, and returns 0 at the end to indicate successful program completion.

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#include<iostream> Lines beginning with a pound sign (#) are used by the compilers pre-processor. In this case the directive #include tells the pre-processor to include the iostream standard file. This file iostream includes the declarations of the basic standard input/output library in C++. (See it as including extra lines of code that add functionality to your program) include <stdio.h> //This is needed to run printf() function. int main() { printf("C Programming"); //displays the content inside quotation return 0; } Output C Programming Explanation of How this program work s 1. Every program starts from main() function. 2. printf() is a library function to display output which only works if #include<stdio.h>is included at the beginning. 3. Here, stdio.h is a header file (standard input output header file) and #include is command to paste the code from the header file when necessary. When compiler encounters printf()function and doesn't find stdio.h header file, compiler shows error. 4. Code return 0; indicates the end of program. You can ignore this statement but, it is good programming practice to use return 0;.

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#Include

  • 1. #include<iostream> Lines beginning with a pound sign (#) are used by the compilers pre-processor. In this case the directive #include tells the pre-processor to include the iostream standard file. This file iostream includes the declarations of the basic standard input/output library in C++. (See it as including extra lines of code that add functionality to your program) include <stdio.h> //This is needed to run printf() function. int main() { printf("C Programming"); //displays the content inside quotation return 0; } Output C Programming Explanation of How this program work s 1. Every program starts from main() function. 2. printf() is a library function to display output which only works if #include<stdio.h>is included at the beginning. 3. Here, stdio.h is a header file (standard input output header file) and #include is command to paste the code from the header file when necessary. When compiler encounters printf()function and doesn't find stdio.h header file, compiler shows error. 4. Code return 0; indicates the end of program. You can ignore this statement but, it is good programming practice to use return 0;.