hello.c

来自「介绍DSP通过USB与主机的数据传送代码」· C语言 代码 · 共 34 行

 #include <stdio.h>
 #include "hello.h" 
 #define BUFSIZE 30 
 struct PARMS str = { 2934, 9432, 213, 9432, &str }; 
 /* * ======== main ======== */ 
 void main()
  { #ifdef FILEIO int i;
   char scanStr[ BUFSIZE]; 
   char fileStr[ BUFSIZE];
   size_t readSize;
    FILE *fptr;
    #endif 
    /* write a string to stdout */ 
    puts("hello world!\ n");
     #ifdef FILEIO 
     /* clear char arrays */ 
     for (i = 0; i < BUFSIZE; i++)
      { scanStr[ i] = 0 
      /* deliberate syntax error */
       fileStr[ i] = 0; } 
       /* read a string from stdin */
        scanf("%s", scanStr);
         /* open a file on the host and write char array */ 
         fptr = fopen("file.txt", "w");
          fprintf(fptr, "%s", scanStr);
           fclose(fptr); 
           /* open a file on the host and read char array */
            fptr = fopen("file.txt", "r"); 
            fseek(fptr, 0L, SEEK_SET); 
            readSize = fread(fileStr, sizeof(char), BUFSIZE, fptr); 
            printf("Read a %d byte char array: %s \n", readSize, fileStr); 
            fclose(fptr);
             #endif }