Be focused and you will archive alot. choose your ON C
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here are some stuffs mostly used in c to declare varaibles, headers, and libaries.
this is a preprocessor directive that is used to include external files (header files) into your source code.For example stdio.h,stdlib.h
This is a funtion that serves as an entry point to every C program.
this funtion is used when ever a c programmer wants to display some output unto the console. In this case we are printing the text "Hello world !" Note :In C text must alwys be printed indouble codes
In this lesson we are going to dive deep into the various components of a
simple C program like that which displayed "Hello WOrld" in our previous lesson
`` `
Various Parts
#include
this is a preprocessor directive that is used to include external files (header files) into your source code.For example stdio.h,stdlib.h
main()
This is a funtion that serves as an entry point to every C program.
Comments
Comments are of two types, sinle-line(/*every line*/ ) and multi - line//BEGINS THIS WAY comments.They help the programmer make notes aabout a funtion or some blog of code this enhances Understanding of the code. They are often ignored by the compiler
Printf()
this funtion is used when ever a c programmer wants to display some output unto the console. In this case we are printing the text "Hello world !"
Note :In C text must alwys be printed indouble codes
return 0 ;
This statement is used to indicate succeful exxecution of the program. If a C program returns any other value apart form "0", it indicates error in the code at one point
Statements
Statements are a fundamental units of execution .theyy instruct the computer to perform specific actions. most staments in c end with a semi colon(;) an examples are:
printf("Hello, World!");
int x = 6;
Semicolon (;)
In C we use a semi colon at the end of each command to indicate to the computer that its the end of the command
#include <stdio.h>
int main() {
//This is a comment
printf("Hello, World!");
return 0;
}
Hello, World!
Explain the code: Clarify complex logic, algorithms, or specific parts of the code. Document the code: Provide information about the author, creation date, modifications, and overall purpose of the code. Temporarily disable code: Comment out blocks of code for testing or debugging purposes. Best Practices Use comments sparingly and judiciously. Write clear and concise comments. Avoid redundant comments that merely restate the obvious. Update comments when the code is modified.
#include <stdio.h>
int main() {
// declaration and intialisation
int x = 3 ;
int y = 2 ;
/*
sum is gotten by adding
x with value of 3
and y with value of 2
*/
int sum = x +y ;
printf("the sum is %d\n",sum);
return 0;
}
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