asp.net C库文件操作相关函数

file *fopen(const char *filename, const char *mode)

size_t fread(void *ptr, size_t size, size_t, file *stream)

size_t fwrite(const void *ptr, size_t size, size_t n, file *stream)

int fgetc(file *stream)

#include 
#include 
int main(void)
{
    file *fp;
    char ch;
    if((fp = fopen("test.txt","rt")) == null)
    {
     printf("file open error!");
     exit(1);
    }
     ch = fgetc(fp);
    while(ch != eof)
    {
     putchar(ch);
     ch = fgetc(fp);
    }
    fclose(fp);
}

int fputc(int c, file *stream)

#include 
#include 
int main(void)
{
    file *fp;
    char ch;
    if((fp = fopen("test.txt","wt+")) == null)
    {
         printf("file open error!");
         exit(1);
    }
    printf("please enter a stringn");
    ch = getchar();
    while(ch != 'n')
    {
         fputc(ch, fp);
         ch = getchar();
    }
    fclose(fp);
}

fscanf(file *stream, char *format [,argument...])

#include 
#include 
int main(void)
{
    int i;
    printf("please enter an interger:");
    if(fscanf(stdin, "%d",&i))    //从标准输入流读取
             printf("the interger is :%dn",i);
    return 0;
}

int fprintf(file *stream, char *format[,argument...])

#include 
#include 
int main(void)
{
    file *stream;
    int i = 10;
    double fp = 1.5;
    char s[] = "hello world";
    char c = 'n';
    stream = fopen("fprint.out", "w");
    fprintf(stream, "%s%c", s, c);
    fprintf(stream, "%dn", i);
    fprintf(stream, "%fn", fp);
    fclose(stream);
    return 0;
}

int fseek(file *stream, long offset, int whence)