数字或字符移位后的计算（Numeric or character shift calculation）.doc

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数字或字符移位后的计算（Numeric or character shift calculation）.doc

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数字或字符移位后的计算（Numeric or character shift calculation）

数字或字符移位后的计算（Numeric or character shift calculation） 21 questions The function ReadDat () to read a English article from the IN.DAT file into an array of strings in XX, please prepare the function CharConvA (), its function is: in units of the last character in the string and the ASCII value of the right 4 after the last second characters of ASCII, the last a new character, the last second characters of the ASCII value of right 4 after the last third characters of ASCII value, finally get second new characters, and so on have been treated to second characters, the first character of the ASCII value and the original last character of ASCII, was the first of a new character the new character, the original string are stored in the corresponding position. Finally, the string that has been processed is re stored in the string array XX by line, and finally the function writeDat () is called to output the result XX to the file OUT10.DAT. The format of the original data file is: the width of each row is less than 80 characters, including punctuation and spaces. Some source programs have been given. Do not change the contents of the main function main () and the write function writeDat (). #includestdio.h #includestring.h #includeconio.h Char xx[50][80]; Int maxline=0; the total number of articles / * Int ReadDat (void) Void WriteDat (void) Void, CharConvA () { } Void, main () { Clrscr (); If (ReadDat ()) { Printf (data file ENG.IN cannot be opened! \n\007 ; Return; } CharConvA (); WriteDat (); } Int ReadDat (void) { FILE *fp; Int i=0; Char *p; If ((fp=fopen (IN.DAT, R)) ==NULL) return 1; While (fgets (xx[i], 80, FP), =NULL) { P=strchr (xx[i],\n); If (P) *p=0; I++; } Maxline=i; Fclose (FP); Return 0; } Void WriteDat (void) { FILE *fp; Int i; Fp=fopen (OUT10.DAT, W); For (i=0; imaxline; i++) { Printf (%s\n, xx[i]); Fprintf (FP,%s\n, xx[i]); } Fclose (FP); } -------------------------------------------------------------------------------- Note: in this question, the main thing i