C代写：CS50 C Programming request1

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C语言基础练习题。

Note

  • Work on an request by yourself without sharing the answer to a classmate. (It is great that students study together but an request is an individual task. It is not a group project.)
  • Start to do an request early and ask the teacher if you have a question.
  • Add a comment with your name at the top of your source code
  • Put all your files that you want to submit into one zip file
1. Please save the program with the name ‘cal.c’

Write a program to input two integer values and out their sum and their difference. A sample run off the program follows. The user input is represented in boldface in the sample run. (page. 56, C by Discovery 4th edition, by Foster & Foster)

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Example:
Enter an integer: 45
Enter another integer: 83
45 + 83 = 128
45 – 83 = -38
2. Please save the program with the name ‘guess.c’

Write a C program that plays a number guessing game with the user. A sample run for the game follows. User input is shown in boldface in the sample run. (C by discovery)

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Welcome to the game of Guess It!
I will choose a number between 1 and 200.
You will try to guess that number. If you guess wrong, I will tell you if you guessed too high or too low.
You have 5 tries to get the number.
OK, I am thinking of a number. Try to guess it.
Your guess? 50
Too high!
Your guess? 12
Too low!
Your guess? 112
Too high!
Your guess? 250
Illegal guess. Your guess must be between 1 and 200.
Try again. Your guess? 30
**** CORRECT ****
Want to play again? y
Ok, I am thinking of a number. Try to guess it.
Your guess? 58
**** CORRECT ****
Want to play again? n
Goodbye, It was fun. Play again soon.

The following code will print out a random generator between 1-100 ten times.

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#include <stdio.h>
#include <stdlib.h>
int main(){
    int c, n;
    printf("Ten random numbers in [1,100]\n");
    for (c = 1; c <= 10; c++)
    {
    n = rand() % 100 + 1;
    printf("%d\n", n);
    }
    return 0;
}