Printf和Scanf对于第二个字符串输入无法正常工作

Question

我试图简单地从用户那里读取输入并将CD记录存储到一些变量中。 正确打印了所有变量的所有变量详细信息，但artist的第二个char数组不打印任何内容。 我试图通过在scanf()的每个格式化字符串的scanf()引入空格来处理多余的字符间距，但这还没有解决。

void displayCDInfo(char* title, char* artist, short noOfTracks, int isAlbum, float price);

int main()
{
    char title[61];
    char artist[41];
    short noOfTracks = 0;
    int isAlbum = 0;
    float price = 0.0;
    char albumOrSingleResponse;

    printf("Please enter the title: ");
    scanf(" %s", title);

    printf("Please enter the artist: ");
    scanf(" %s", artist);

    printf("Please enter the number of records: ");
    scanf(" %d", &noOfTracks);

    printf("Please enter whether or not the cd is an album/single (A or S): ");
    scanf(" %c", &albumOrSingleResponse);

    if(albumOrSingleResponse == 'A')
    {
        isAlbum = 1;
    }

    printf("Please enter the price of the CD: ");
    scanf(" %f", &price);

   displayCDInfo(title, artist, noOfTracks, isAlbum, price);

   return 0;
}

void displayCDInfo(char* title, char* artist, short noOfTracks, int isAlbum, float price)
{
    printf("\nThe title of the CD is %s", title);
    printf("\nThe name of the artist is %s", artist);
    printf("\nThe number of tracks on this CD are %d", noOfTracks);
    printf("\nThe CD is an %s", (isAlbum == 1) ? "album" : "single");
    printf("\nThe price of the cd is $%.2f", price);
}

Answer 1

删除空间： scanf("%s", ...)
并添加一个空格： scanf(" %c", ..)

int main()
{
    char title[61];
    char artist[41];
    short noOfTracks = 0;
    int isAlbum = 0;
    float price = 0.0;
    char albumOrSingleResponse;

    printf("Please enter the title: ");

scanf("%s", title);

printf("Please enter the artist: ");
scanf("%s", artist);

printf("Please enter the number of records: ");
scanf("%hu", &noOfTracks);

printf("Please enter whether or not the cd is an album/single (A or S): ");
scanf(" %c", &albumOrSingleResponse);

if(albumOrSingleResponse == 'A')
{
    isAlbum = 1;


   }

    printf("Please enter the price of the CD: ");
    scanf("%f", &price);

   displayCDInfo(title, artist, noOfTracks, isAlbum, price);

   return 0;
}

因为当您在" %c"之前添加空格时，它会占用先前输入所输入的换行符。

编辑：从这个 ，你可以使用"%hu"用于打印short ，以避免任何警告。

Answer 2

这将起作用。 只需从主体顶部移动char数组声明的位置即可。

void displayCDInfo(char* title, char* artist, short noOfTracks, int isAlbum, float price);

int main()
{
    short noOfTracks = 0;
    int isAlbum = 0;
    float price = 0.0;
    char albumOrSingleResponse;
    char title[61];
    char artist[41];

    printf("Please enter the title: ");
    scanf(" %s", title);

    printf("Please enter the artist: ");
    scanf(" %s", artist);

    printf("Please enter the number of records: ");
    scanf(" %d", &noOfTracks);

    printf("Please enter whether or not the cd is an album/single (A or S): ");
    scanf(" %c", &albumOrSingleResponse);

    if(albumOrSingleResponse == 'A')
    {
        isAlbum = 1;
    }

    printf("Please enter the price of the CD: ");
    scanf(" %f", &price);

   displayCDInfo(title, artist, noOfTracks, isAlbum, price);

   return 0;
}

void displayCDInfo(char* title, char* artist, short noOfTracks, int isAlbum, float price)
{
    printf("\nThe title of the CD is %s", title);
    printf("\nThe name of the artist is %s", artist);
    printf("\nThe number of tracks on this CD are %d", noOfTracks);
    printf("\nThe CD is an %s", (isAlbum == 1) ? "album" : "single");
    printf("\nThe price of the cd is $%.2f", price);
}

Answer 3

我想出了如何立即解决此问题，同时noOfTracks保留为简短的内容。 由于我在"%d"曲目数”变量上使用"%d"作为scanf，因此我覆盖了分配给前一个变量的空间，即艺术家，因此为什么不显示它。 为了解决这个问题，我必须将int的int从"%d"更改为"%hu" 。

void displayCDInfo(char* title, char* artist, short noOfTracks, int isAlbum, float price);

int main()
{
    char title[61];
    char artist[41];
    short noOfTracks = 0;
    int isAlbum = 0;
    float price = 0.0;
    char albumOrSingleResponse;

    printf("Please enter the title: ");
    scanf("%s", title);

    printf("Please enter the artist: ");
    scanf("%s", artist);

    printf("Please enter the number of records: ");
    scanf("%hu", &noOfTracks);

    printf("Please enter whether or not the cd is an album/single (A or S): ");
    scanf(" %c", &albumOrSingleResponse);

    if(albumOrSingleResponse == 'A')
    {
        isAlbum = 1;
    }

    printf("Please enter the price of the CD: ");
    scanf(" %f", &price);

    displayCDInfo(title, artist, noOfTracks, isAlbum, price);

    return 0;
}

void displayCDInfo(char* title, char* artist, short noOfTracks, int isAlbum, float price)
{
    printf("\nThe title of the CD is %s", title);
    printf("\nThe name of the artist is %s", artist);
    printf("\nThe number of tracks on this CD are %hu", noOfTracks);
    printf("\nThe CD is an %s", (isAlbum == 1) ? "album" : "single");
    printf("\nThe price of the cd is $%.2f", price);
}