回复 28楼 玩出来的代码
你好,这是我依照您的代码,所写的程序:程序代码:
#include <stdio.h> #include <stdlib.h> #include <iostream> int main(int argc,char **argv) { FILE *pf=fopen(argv[1],"rb+"); fseek(pf,0,SEEK_END); int filesize=ftell(pf); fseek(pf,0,SEEK_SET); int num=1024*1024; char *pbFile=new char[num+1]; bool bFlag=false; int target[26]={0}; if(pbFile==NULL) { printf("new error"); return -1; } while(filesize>0) { if(filesize<num) num=filesize; fread(pbFile,num,1,pf); for(int i=0;i<num;i++) { while((i<num && pbFile[i]=='>') || bFlag) { bFlag=true; while(i<num && pbFile[i]!='\n')i++; if(i<num) { bFlag=false; i++; } else if(i==num) break; } while(i<num && pbFile[i]!='\r' && pbFile[i]!='\n') target[pbFile[i++]-65]++; } filesize-=num; } delete []pbFile; fclose(pf); FILE *p=fopen(argv[2],"r+"); fprintf(p,"%d",target[0]+target['G'-'A']+target['C'-'A']+target['T'-'A']); fclose(p); cout<<target[0]+target['G'-'A']+target['C'-'A']+target['T'-'A']<<endl; return 0; }
不知为何,当我g++此程序时,有一下的错误信息:
程序代码:
read_count.cpp: In function `int main(int, char**)': read_count.cpp:51: error: `cout' was not declared in this scope read_count.cpp:51: error: `endl' was not declared in this scope
您知道,该如何解决这问题吗?
以下是我电脑的一些资料:
ia64 GNU/Linux gcc (GCC) 3.4.6 20060404 (Red Hat 3.4.6-8)
谢谢您的任何意见 :)