Complete collection of basic statements in C language

The basic statements of C language include variable declarations, assignments, inputs, outputs, control flows (if-else, switch-case, for, while, do-while), return statements, comments, operators, keywords and data types.

Basic C language statements

1. Variable declaration

• Format: datatype variable_name;
• Declare a variable and specify its data type. For example: int count;

2. Assignment

• Format: variable_name = expression;
• Assign the value of the expression to a variable. For example: count = 5;

3. Enter

• Format: scanf("%format_specifier", &variable_name);
• Read data from standard input and store it in variables. For example: scanf("%d", &count);

4. Output

• Format: printf("format_specifier", argument);
• Displays data to standard output. For example: printf("Count is : %d\n", count);

5. Control flow

• if-else : Execute or skip code blocks according to conditions.
• switch-case : executes different code blocks according to the value of a variable.
• for : Create a loop to execute code blocks repeatedly.
• while : As long as the conditions are met, the code block will be executed loop.
• do-while : Execute the code block at least once, and then repeat according to the conditions.

6. Return statement

• Format: return expression;
• Returns the value of the expression or the specified value from the function.

7. Comments

• Single line comment: // comment
• Multi-line comment: /* comment */
• Used to add instructions in the code.

8. Operator

• Arithmetic operators ( , -, *, /)
• Relational operators (==, !=, >,
• Logical operators (&&, ||,!)
• Bit operator (>)

9. Keywords

• A predefined identifier used to identify compiler operations. For example: int , for , return .

10. Data Type

• Several data types used in C language to specify variables. For example: int , float , char , bool .

The above is the detailed content of Complete collection of basic statements in C language. For more information, please follow other related articles on the PHP Chinese website!