我有这个程序可以在使用 C 的 MinGW 编译器的 Eclipse 上运行，但不能在 PuTTy 上运行。如果再次使用 Eclipse 和 MinGW 运行/编译它，它工作得很好。但是，在 PuTTy 中，输入难度后，它会直接跳转到分数输出(0/不管要问多少问题)。我的函数调用有什么问题，可能会导致它无法与所有 GCC 编译器一起正常工作？

/*
 * quiz.c
 *
 * Created on: Feb 7, 2014
 * Author: Paul
 */
#include 
#include 
#include 
/* Generating random numbers:
 * Include stdlib.h
 * Include time.h
 * RAND_MAX is the largest positive (defaults to 2.14 billion)
 * the numbers generated are psuedo numbers, so it must be changed.
 *
 * Keep variable declarations at the top to squash Pendantic warnings.
 * */
int genQuestion(int);
int answerQuestion(int);
int response(int);

int chính()
{
    int counter;
    int difficulty;
    int qcounter;
    int numCorrect;
    int question;


    /*
     * Disable buffering, because it would otherwise not display the
     * text. How annoying.
     */
    setbuf(stdout, NULL);

    while ((counter < 1) || (counter > 20))
    {
        printf("How many questions for the test (1-20)? ");
        scanf("%d",&counter);
        printf("\n");
    }

    while ((difficulty < 1) || (difficulty > 4))
    {
        printf("Select difficulty (1-4): ");
        scanf("%d",&difficulty);
        printf("\n");
    }

    while (qcounter < counter)
    {
        printf("Question %d: ", qcounter+1);
        question = genQuestion(difficulty);
        if (answerQuestion(question))
        {
            response(1);
            numCorrect++;
        }
        khác
        {
            response(0);

            printf("The correct answer was %d\n", question);
        }

        qcounter++;
    }

    printf("Your score was %d / %d\n", numCorrect, counter);

    trả về 0;
}

int genQuestion(int diff)
{
    int gMin, n1;
    int gMax, n2;
    int rndOperator;
    int ans;

    setbuf(stdout, NULL);
    srand(time(NULL));
/* Set up the difficulties for minimum and maximum ranges.
 */

    if (diff == 1)
    {
        gMin = 1;
        gMax = 10;
    }
    else if (diff == 2)
    {
        gMin = 1;
        gMax = 50;
    }
    else if (diff >= 3)
    {
        gMin = 100;
        gMax = 200;
    }

    if (diff == 4)
    {
        n1 = rand() %gMax - gMin;
        n2 = rand() %gMax - gMin;
    }
    khác
    {
        n1 = rand() %gMax + gMin;
        n2 = rand() %gMax + gMin;
    }

    rndOperator = rand() %4 + 1;

    /*
     * Legend:
     * 1 = +
     * 2 = -
     * 3 = *
     * 4 = /
     * Thus, if we divide, make sure the denominator "n2" isn't 0. If
     * it is, set it to 1 instead. This is our safeguard.
     */

    if (rndOperator == 1)
    {
        printf("%d + %d = ",n1,n2);
        ans = n1 + n2;
    }
    else if (rndOperator == 2)
    {
        printf("%d - %d = ",n1,n2);
        ans = n1 - n2;
    }
    else if (rndOperator == 3)
    {
        printf("%d * %d = ",n1,n2);
        ans = n1 * n2;
    }
    else if (rndOperator == 4)
    {
        if (n2 == 0)
            n2 = 1;

        printf("%d / %d = ",n1,n2);
        ans = n1 / n2;
    }
    return ans;
}

int answerQuestion(int answer)
{
    int userAns;

    setbuf(stdout, NULL);
    scanf("%d",&userAns);

    if (answer == userAns)
        return 1;
    khác
    {
        trả về 0;
    }
}

int response(int amIRight)
{
    int liner;

    setbuf(stdout, NULL);
    srand(time(NULL));
    liner = rand() %3 + 1;
    if(amIRight == 1)
    {
        if (liner == 1)
            printf("Alrighty!\n");
        else if (liner == 2)
            printf("Well done!\n");
        khác
            printf("Great work!\n");
    }
    khác
    {
        if (liner == 1)
                printf("Sorry Charlie!\n");
            else if (liner == 2)
                printf("No can do!\n");
            khác
                printf("Incorrect.\n");
    }
    trả về 0;
}

1 Câu trả lời

您正在使用未初始化的变量 counter、difficulty、qcounter 等。

 while ((counter < 1) || (counter > 20)) {
          ^Not initialized before entering the loop  

您的程序调用了未定义的行为。什么事情都可能发生。它可能会在不同的编译器上给出不同的结果。

关于c - 程序适用于 Eclipse 但不适用于 PuTTy，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/21763779/