在C中打印出动态分配的内存

时间:2017-11-30 13:49:19

标签: c

我是编程的初学者,并获得了有关动态分配内存的作业。其中一个预期的输出是printf语句,其中所有输入的输入(整数)连续打印在一行中。我已经设法在一个for循环中打印printf,但那是不应该的。如何在一个代码行中打印它们?这是代码:

int main()
{ 
    int how_many_integers, count, entered_integers, i, *pSize;

    printf("\nHow many integers are you going to type?\n");
    scanf("%i", &how_many_integers);
    getchar();

    // Allocates memory for the integers.
    pSize = malloc (how_many_integers * sizeof(int));

    // Checks if the integer is 0, and/or reads in all the integers.
    if (how_many_integers == 0)
    {
        printf("No numbers were given.\n");
        exit(0);
    }
    printf("Please enter your integers.\n");
    for (int i = 0; i < how_many_integers; i++)
    {
        scanf("%i", &entered_integers);
        count++;
        pSize[i] = entered_integers;
    }
    for (int i = 0; i < how_many_integers; i++)
    {
        printf("Number: %i\n", *(pSize+i));
    }
    free(pSize);

    printf("Count: %i", count);

    return 0;
}

1 个答案:

答案 0 :(得分:4)

试试这个:

printf("Numbers:");
for (int i = 0; i < how_many_integers; i++)
{
    printf(" %i", *(pSize+i)); // No \n
}
printf("\n"); // if you want a new line at the end

这应该会产生类似

的输出

Numbers: 1 2 3 4 5

正如其他人提到的那样,您的count变量永远不会被初始化。将其初始化为0。