C语言文件应用,请高手指教!

你的程序思路在内层循环哪儿有些混乱，实现不了你所要求的功能，按照以下代码改就对了；fgets()函数读取的字符串里含有空格，比如他第一次读取的是"hejie tianjing"，这样就无法进行下面的比较，所以用fscanf(fp,"s",buf)代替。下面是改正后的代码：#include<stdio.h>#include<stdlib.h>#include<conio.h>#include<string.h>#define null NULLint main() { FILE *fptr1,*fptr2,*fptr3;char temp[15],temp1[15],temp2[15];if((fptr1=fopen("a.txt","r"))==null) { printf("can not open file");exit(0);} if((fptr2=fopen("b.txt","r"))==null) { printf("can not open file");exit(0);} if((fptr3=fopen("ab.txt","w"))==null) { printf("can not open file");exit(0);} //clrscr();//while(strlen(fgets(temp1,15,fptr1))>1) while(fscanf(fptr1,"%s",temp1)!=EOF) { fgets(temp2,15,fptr1);fputs(temp1,fptr3);fputs(temp2,fptr3);strcpy(temp,temp1);do { if(fscanf(fptr2,"%s",temp2)==EOF) { printf("Something Error!\n");exit(1);} }while(strcmp(temp,temp2)!=0);fgets(temp2,15,fptr2);fputs(temp2,fptr3);rewind(fptr2);} fclose(fptr1);fclose(fptr2);fclose(fptr3);} ab.txt内容：hejie tianjing 8764 liying shanghai 12345 liming chengdu 7654322 wangpin chongqing 87643 linux里conio.h在那里不知道还有，clrscr()函数值在TC里有吧？我用的是VC,所以找不见那个函数，将它注释掉了。你的新要求的参考答案：#include<stdio.h>#include<stdlib.h>#include<conio.h>#include<string.h>#define null NULLint main() { FILE *fptr1,*fptr2,*fptr3;int lock=0;char temp[15],temp1[15],temp2[15],temp3[15];if((fptr1=fopen("a.txt","r"))==null) { printf("can not open file");exit(0);} if((fptr2=fopen("b.txt","r"))==null) { printf("can not open file");exit(0);} if((fptr3=fopen("ab.txt","w"))==null) { printf("can not open file");exit(0);} //clrscr();//while(strlen(fgets(temp1,15,fptr1))>1) while(fscanf(fptr1,"%s",temp1)!=EOF) { fgets(temp2,15,fptr1);strcpy(temp3,temp2);//fputs(temp1,fptr3);//fputs(temp2,fptr3);strcpy(temp,temp1);do { if(fscanf(fptr2,"%s",temp2)==EOF) { 收起