C의 변수 - 프로그래밍 언어

변수

int a = 10 ;

장소에서 변수를 시각화하는 방법.

        int i = 10;
        int j = 20;
        // int k = i + j; 

        printf("%d", i + j);

변수 명명 규칙 .

  It means that if we start the variable name with a number then the compiler will give an error.

   we can make variable name as "_abc" or "abc_" or "abc"  

   but not "1abc" or "@abc" or "abc@" .

  It means that if we have a variable name which contains spaces then the compiler will give an error.

  we can make variable name as "abc1def" or "abc_def" or "abcdef"  

  but not "abc,def" or "abc def" or "abc@def" .

  It means that if we start the variable name with a number then the compiler will give an error.

  we can make variable name as "abc" or "abc_" or "abc"  

  but not "1abc" or "45abc" or "001_abc@" .

  It means that if we have a variable name which contains special characters then the compiler will give an error.

  we can make variable name as "abc" or "abc_" or "abc"  

  but not "1abc" or `@abc` or "abc@" .

변수를 선언하는 방법.

더 나은 이해를 위해 예를 들어 보겠습니다.

    int i = 10;
    float f = 10.5;
    char c = 'a';
    double d = 10.5;

우리는 다음 모듈에서 데이터 유형에 대해 논의할 것입니다!

변수에 값을 할당하는 방법.

명명 규칙

  int a = 10; ❎

  // here we are assigning the value 10 to the variable a , but with more code and more complexity we shall not be able to find the origin of a , and this can take a much time in debugging the code .

  int number = 10; ✅

  // here by just looking at the variable we can make a idea about the origin of the variable  number that its store some kind of number .

  int random_number = 10004546679667677;

  // here we can see that the variable `10004546679667677` is comming from the `random_number` variable.

  int user_name = "Abhishek Kushwaha";

  // here we can see that the variable `Abhishek Kushwaha` is comming from the `user_name` variable.

  int user_age = 20;

  // here we can see that the variable `20` is comming from the `user_age` variable.