Diff: main.cpp

Revision:

1:fca955be2a5b

Parent:

0:4e756c4c88a7

--- a/main.cpp	Mon Sep 13 14:20:21 2010 +0000
+++ b/main.cpp	Sun Sep 25 19:04:39 2016 +0000
@@ -6,7 +6,26 @@
 int main () {
 
     FILE *fp = fopen("/fs/hello.txt","w");
-    fprintf(fp,"Hello world!\n");
+    if ( fp == NULL )
+    {
+        error("Could not open file for write\n");
+    }
+    fprintf(fp, "Hello mass storage!\n\r");
     fclose (fp);
+    printf("Goodbye World!\n\r");
+    
+    
+    // example of reading a file one byte at a time
+   // // and display it in hex format on the terminal
 
+    unsigned char c;                          // a single byte buffer
+
+    fp = fopen("/fs/hello.txt", "r");  // open the file in 'read' mode
+
+    while (!feof(fp)) {                       // while not end of file
+        c=fgetc(fp);                         // get a character/byte from the file
+        printf("%c\r",c);                  //
+    }
+    printf("\n\r");
+    fclose(fp);                               // close the file
 }
\ No newline at end of file