如何重置while循环？(How do I reset a while loop?)

如何重置while循环？(How do I reset a while loop?)

这是我正在处理的一些代码的摘录。 只是想知道如何重置嵌套循环？ 当第一个循环再次运行时，它仍保留在文件的末尾。

while(fscanf(fp2,"%s", wordcheck)!=EOF)//Reads word from text file into array// { for (i=0; wordcheck[i]; i++) { wordcheck[i] = tolower(wordcheck[i]);//makes all characters lower case// } printf("%s", wordcheck); while(fscanf(fp1,"%s", worddict)) { if(strcmp(wordcheck, worddict)==0)//compare strings// { printf("This word: %s is in the dictionary\n", wordcheck); dictcount++; break; } else { dictcount++; } if(worddict == NULL) { printf("Your word: %s is not in the dictionary\n", wordcheck); } } }

Here is an extract for some code that I am working on. Just wondering how would I go about resetting the nested loop? It remains at the end of the file when the first loop runs again.

while(fscanf(fp2,"%s", wordcheck)!=EOF)//Reads word from text file into array// { for (i=0; wordcheck[i]; i++) { wordcheck[i] = tolower(wordcheck[i]);//makes all characters lower case// } printf("%s", wordcheck); while(fscanf(fp1,"%s", worddict)) { if(strcmp(wordcheck, worddict)==0)//compare strings// { printf("This word: %s is in the dictionary\n", wordcheck); dictcount++; break; } else { dictcount++; } if(worddict == NULL) { printf("Your word: %s is not in the dictionary\n", wordcheck); } } }

最满意答案

使用fseek ：

fseek(fp2, 0, SEEK_SET);

..或更简单地说， rewind ：

rewind(fp2);

Use fseek:

fseek(fp2, 0, SEEK_SET);

.. or more simply, rewind:

rewind(fp2);