c - 从 C 中的同一个文件中读取 int 和 char

Question

我有一个如下所示的文本文件:

i 3755
i 3633
i 4435
i 1434

我如何将其作为输入读取，我尝试过使用 fscanf，但它一直在“i”之后给我一个随机字符

例如输出看起来像

i% 3755

i5 3633

等等

这是我一直在尝试的:

    int data = 0; 
char command; 
if(fptr==NULL)
    printf("File Cannot Be Read"); 

fscanf(fptr,"%c %d\n", &command, &data); 
printf("%c " , command);
printf("%d\n" , data);

fscanf(fptr,"%s %d\n", &command, &data); 
printf("%c " , command);
printf("%d\n" , data); 

fscanf(fptr,"%s %d\n", &command, &data); 
printf("%s " , command);
printf("%d\n" , data);

它们似乎都不起作用。提前感谢您的帮助!

编辑:这里是任何遇到同样问题的人的工作代码:

int data = 0; 
char command; 
fptr = fopen(argv[1], "r"); 

if(fptr==NULL)
    printf("File Cannot Be Read"); 

while(fscanf(fptr,"%c %d \n", &command, &data) == 2)
{

        if(command == 'i')
        {
            printf("insert found\n");
        }
            if(command == 'd')
        {
            printf("delete found\n");
        }

} 

Answer 1

fscanf(fptr,"%c %d", command, &data); 

应该是:

fscanf(fptr,"%c %d", &command, &data); 
getchar();  // consume the newline character that fscanf left.

假设您定义了:

char command;
int data;