C program:  Write a program that: As its input arguments, accepts a program name followed by any number of arguments for that program. Creates a child process that executes the given program, passing all the provided arguments to it. Once the execution of the child process finishes, the parent process receives the child process exit code (X) and prints Exit code was X to the standard error device.   Please show the full code and the output in the terminal with no errors in the code:

Ex1: Write a program shows in which a child process is created. The Child print out Hello message using it standard output, the parent will receive the message by reading it from the pipe. Hint : you should use the dup2 () to link the stdout of the child to the write end of the pipe

Command line arguments are passed to int main(int argc, char** argv) as arguments argc and argv. You should assume that argc is at ebp+8 and argv is at ebp+12. This program is invoked from the command line as shown: ./program 5 7 The procedure named what is called from main, and returns to main with the value:   Options: a) 11 b) 66

Instructions • Input: Prompt the user to enter an arithmetic expression involving two whole numbers and one of the operators , +, -, in the format x operator (e.g., 3 * 2). Use cin >> x >> op >> y; for input. Processing: Use a switch statement to perform the appropriate arithmetic operation based on the entered operator (*, +, -, 7). • Output: Display the result of the arithmetic operation to the user. What to do: 1. Prompt the user to enter an arithmetic expression as x operator y. Use cin >> x >> op >> y; to capture these inputs. 2. Employ a switch statement to determine the appropriate arithmetic operation to perform based on the entered operator. 3. Display the calculated result to the user. Criteria: • Use cin >> x >> op >> y; to capture user input. • Your code must utilize a switch statement for decision-making. • Only the operators *, +, -, / should be accepted. • You must use appropriate variable types and maintain a clear code structure. Code should be well-documented. C:…