Printf和Scanf对于第二个字符串输入不能正常工作

Question

我试图简单地从用户读取输入并将CD记录存储到某些变量中。除了char的第二个阵列artist（不打印任何内容）外，所有变量的详细信息都已正确输出。我试图通过在scanf()的每个格式化字符串的前面引入空格来处理额外的字符间距，但这并没有解决它。

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

我想通了如何解决这个问题，同时保留noOfTracks作为短。因为我使用"%d"作为number of tracks变量的scanf，所以我覆盖了为前一个艺术家变量分配的空间，因此它没有被显示出来。为了解决这个问题，我不得不将"%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); 
} 

Answer 2

删除空格：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; 
} 

因为当你" %c"前添加一个空格它消耗的换行符与以前输入的输入。

编辑：从this，您可以使用"%hu"打印short，以避免任何警告。

Answer 3

这将工作。只需从主体的顶部移动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); 
}