01/02 隨堂練習及作業

注意:

作業請寄到 pyting@ind.ntou.edu.tw
主題請註明 91資管學號EXXXXXXXXX作業X
以附件方式將 zip 起來的檔案傳送給我

#include <stdio.h> // printf("%s",... puts sprintf(buf,"...", ... #include <string.h> // strcpy, strcat, strcmp, strrev, strlen #include <ctype.h> // toupper tolower void myStrcat(char str1[], char str2[]); void main() { char str1[100] = "abcdef"; char str2[100] = {'a', 'b', 'c', 'd', 'e', 'f', '\0'}; char str3[100]; int i; printf("the length of str1 is %d\n", strlen(str1)); // The following statement is strictly forbidden // printf("the uninitialized str3 is %s\n", str3); strcpy(str3, str1); printf("str3 is %s\n", str3); // The following only compares // the str1 pointer and the str3 pointer if (str1 == str3) printf("address of str1 is equal to str3\n"); else printf("address of str1 is not equal to str3\n"); if (strcmp(str1, str3) == 0) printf("str1 is equal to str3\n"); else printf("str1 is not equal to str3\n"); strrev(str1); printf("\nstr1 is %s\n", str1); for (i=0; i<(int)strlen(str2); i++) str2[i] = toupper(str2[i]); printf("str2 is %s\n", str2); // strcat(str1, str2); myStrcat(str1, str2); printf("str1 is %s\n", str1); puts(str1); for (i=0; i<5; i++) { sprintf(str3, "data%02d.dat", i); printf("open the file %s\n", str3); // fp = fopen(str3, "r"); // ... // fclose(fp); } for (i=0; i<(int)strlen("hello"); i++) putchar("hello"[i]); putchar('\n'); strcpy(str1, "hello"); for (i=0; i<(int)strlen(str1); i++) putchar(str1[i]); putchar('\n'); } void myStrcat(char str1[], char str2[]) { int i; int len = strlen(str1); for (i=0; i<(int)strlen(str2); i++) str1[len+i] = str2[i]; str1[len+i] = 0; }

#include <stdio.h> #include <stdlib.h> void main() { int data; FILE *infile, *outfile; int byteCount=0; infile = fopen("in.dat", "rb"); if (infile == 0) { printf("error in opening in.dat"); exit(1); } outfile = fopen("out.dat", "wb"); if (outfile == 0) { printf("error in opening out.dat"); fclose(infile); exit(1); } while ((data=getc(infile)) != EOF) { putc(data, outfile); byteCount += 1; } fclose(infile); fclose(outfile); printf("%d bytes copied from in.dat to out.dat\n", byteCount); }

請下載下面檔案並且計算檔案內有多少個字元及多少個英文字?

#include <stdio.h> #include <stdlib.h> int isAlphabetic(int data); void main() { int prevdata=0, data; FILE *infile; int byteCount=0, wordCount=0; infile = fopen("word.dat", "rb"); if (infile == 0) { printf("error in opening word.dat"); exit(1); } while ((data=getc(infile)) != EOF) { if (isAlphabetic(data) && !isAlphabetic(prevdata)) wordCount += 1; byteCount += 1; prevdata = data; } fclose(infile); printf("%d bytes read from word.dat\n", byteCount); printf("%d words read from word.dat\n", wordCount); } int isAlphabetic(int data) { if (((data>='a')&&(data<='z'))|| ((data>='A')&&(data<='Z'))) return 1; else return 0; }

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製作日期: 11/28/2002 by 丁培毅 (Pei-yih Ting)
E-mail: pyting@cs.ntou.edu.tw TEL: 02 24622192x6615
海洋大學 理工學院 資訊科學系 Lagoon