比较这几个文件，把重复的输出在一个文本文件中~在线等
/root/posapl/include/hposdefdmcommon.h
/root/posapl/include/libTGSock.h
/root/posapl/include/opeinfstr.h
/root/posapl/include/TG8583.h
/root/posapl/include/TGCre.h
/root/posapl/src/appc/appcmain.c
/root/posapl/src/aprpt/configure.in
/root/posapl/src/aprpt/actual/configure.in
/root/posapl/src/aprpt/actual/Makefile.am
/root/posapl/src/aprpt/common/configure.in
/root/posapl/src/appc/autogen.sh
/root/posapl/src/appc/configure.in
/root/posapl/src/appc/Makefile.am
/root/posapl/src/aprpt/configure.in
/root/posapl/src/aprpt/actual/configure.in
/root/posapl/src/aprpt/actual/Makefile.am
/root/posapl/src/aprpt/common/configure.in
把重复的输出在一个文本文件中~在线等 用C语言~~

[解决办法]

C/C++ code

//将out.txt文件中的内容排序并去重,结果保存到unique.txt中#include <stdio.h>#include <stdlib.h>#define MAXLNO 10000000 //能处理的最大行数#define MAXLEN 20       //能处理的最大行宽,包括行尾的\n和字符串尾的\0char buf[MAXLNO][MAXLEN];int ln,i;FILE *f;int cmpfun( const void *arg1, const void *arg2 ) {    return strcmp((const char *)arg1,(const char *)arg2);}int main() {    f=fopen("out.txt","r");    if (NULL==f) {        printf("Can not find file out.txt\n");        return 1;    }    ln=0;    while (1) {        if (NULL==fgets(buf[ln],MAXLEN,f)) break;        ln++;        if (ln>=MAXLNO) {            printf("Lines >%d ignored.",MAXLNO);            break;        }    }    fclose(f);    if (ln>1) qsort(buf,ln,MAXLEN,cmpfun);    f=fopen("unique.txt","w");    if (NULL==f) {        printf("Can not create file unique.txt\n");        return 2;    }    fprintf(f,"%s",buf[0]);    if (ln>1) for (i=1;i<ln;i++) {        if (strcmp((const char *)buf[i-1],(const char *)buf[i])) fprintf(f,"%s",buf[i]);    }    fclose(f);    return 0;}