How to write piecewise function program in c language

C language segmented function program writing steps: 1. At the beginning of the program, define the prototype of the function, including the function name, return value type and parameter list; 2. In the main part of the program, implement the function Specific functions; 3. In the main function, call the function through the function name and parameter list, and assign the return value of the function to a variable or directly use the return value of the function; 4. Save the program with .c as the suffix file, use a C language compiler to compile the program into an executable file, and then run the executable file.

The operating environment of this article: Windows 10 system, Code Blocks version 20.03, Dell G3 computer.

Writing a segmented function program in C language mainly includes the following steps:

Define the prototype of the function: At the beginning of the program, define the prototype of the function, including the function name and return value type and parameter list. For example, if you want to write a function that calculates the sum of two numbers, you can define the following function prototype:

int sum(int a, int b);

Implement the definition of the function: In the main part of the program, implement the specific functions of the function. Depending on the function of the function, different implementation methods can be used. For example, if you want to implement a function that calculates the sum of two numbers, you can use the following function definition:

int sum(int a, int b) {
    return a + b;
}

Call the function in the main function: In the main function, you can call the function through the function name and parameter list, And assign the return value of the function to a variable or use the return value of the function directly. For example, you can call the sum function in the main function to calculate the sum of two numbers and output the result:

int main() {
    int a = 5;
    int b = 3;
    int result = sum(a, b);
    printf("The sum of %d and %d is %d\n", a, b result);
    return 0;
}

Compile and run the program: Save the program as a file with a .c suffix (such as sum. c), use a C language compiler to compile the program into an executable file (such as sum.exe), and then run the executable file.

The above is the writing process of a simple piecewise function program. According to specific needs, you can write more complex functions and call them in the main function. It should be noted that the parameter list, return value type and function body implementation of the function need to be adjusted according to actual needs.

The above is the detailed content of How to write piecewise function program in c language. For more information, please follow other related articles on the PHP Chinese website!