在一個檔案末尾增加字串，並在控制台列印出來

標籤：

 1 #include<stdio.h> 2 #include<stdlib.h> 3  4 int main() 5 { 6     FILE *fp_write, *fp_read; 7     char ch; 8     char add[] = "An extra line\n"; 9 10     fopen_s(&fp_write,"E:\\first.txt","a+");11     if(fp_write == NULL)12     {13         printf("Can‘t open the file!\n");14         system("pause");15         return 0;16     }17     //定位到檔案末尾18     fseek(fp_write,0,SEEK_END);19     fputs(add,fp_write);20     //fwrite(add,sizeof(add),1,fp_write);21     //先關閉寫入流再開啟讀出流22     fclose(fp_write);23 24     fopen_s(&fp_read,"E:\\first.txt","r");25     if(fp_read == NULL)26     {27         printf("fp_read,Can‘t open the file!\n");28         system("pause");29         return 0;30     }31     while((ch = fgetc(fp_read)) != EOF)32         putchar(ch);33 34     fclose(fp_read);35 36     system("pause");37     return 0;38 }

 

在一個檔案末尾增加字串，並在控制台列印出來