initial commit / add all books

2 files changed, 31 insertions, 0 deletions

diff --git a/659/CH12/EX12.5/exm12_5.sce b/659/CH12/EX12.5/exm12_5.sce
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+//                    Example12.5
+//Write a program that uses function ftell(mtell) and fseek(mseek).
+
+warning('off');
+//Open file 'RANDOM' in write mode,fp is file descriptor
+fp=mopen('RANDOM','w'); 
+c=read(%io(1),1,1,'(a)');
+mfprintf(fp,'%s',c);    //write data to the file
+printf("Number of characters entered = %d\n",mtell(fp));
+mclose(fp);
+
+//Open file 'RANDOM' in read mode
+fp=mopen('RANDOM','r');
+n=0;
+while(meof(fp)==0)
+//n is the offset from origin in number of bytes.
+//The new position is at the signed distance given by n bytes from the beginning
+    mseek(n,fp,'set');
+    //Print the chracter  and its postion
+    printf("Position of %c is %d\n",ascii(mget(1,'c',fp)),mtell(fp));
+    n=n+5;
+end
+n=0;     //Initial offset
+while(mtell(fp)>1)
+ //New position is at the signed distance given by n bytes from the end
+      mseek(n,fp,'end');
+      //Print the characters from the end
+      printf("%c",(ascii(mget(1,'c',fp))));
+      n=n-1;
+end
+mclose(fp);
diff --git a/659/CH12/EX12.5/exm12_5_output.PNG b/659/CH12/EX12.5/exm12_5_output.PNG
new file mode 100755
index 000000000..bb468ccca
--- /dev/null
+++ b/659/CH12/EX12.5/exm12_5_output.PNG