What is the usage of the long data type in the C langua…

In the C language, ‘long’ is an integer data type used to represent a larger range of integers. Its usage is as follows:

1. Declare a long type variable: You can use the keyword long to declare a variable of type long, for example: long num;
2. Assigning a value to a long type variable: You can assign an integer value to a long type variable, for example: num = 1000000;
3. To declare a long integer constant, you can add the suffix “L” or “l” after an integer constant, for example: long num = 1000000L;
4. Perform arithmetic operations: long data type can perform common arithmetic operations such as addition, subtraction, multiplication, and division, for example: long result = num1 + num2;
5. To format the output using %ld: When using the printf function to output a long type variable, you need to use %ld as the format specifier. For example: printf(“%ld”, num);

It should be noted that the length of long types may vary in different compilers and operating systems, but typically, the length of a long type is 4 bytes. If a larger range of integers is needed, long long type can be used.