C語言簡單樣本(檔案讀寫3)

#include<stdio.h>void main(int argc,char *argv[]){FILE *fpRead, *fpWrite;char ch;if(argc == 1){printf("have not enter file name strike any key exit");getch();exit(0);}if((fpRead = fopen(argv[1],"rt")) == NULL){printf("Cannot open %s\n",argv[1]);getch();exit(1);}if(argc == 2){fpWrite = stdout;}else if ((fpWrite = fopen(argv[2],"wt+")) ==NULL){printf("Cannot open %s\n",argv[2]);}while((ch = fgetc(fpRead)) != EOF){fputc(ch,fpWrite);}fclose(fpRead);fclose(fpWrite);}