c语言教材（按位与有一些特殊的用处）
#include #include main( ) {FILE *in,*out; char ch,infile[10],outfile[10]; printf("Enter the infile name:\n"); scanf("%s",infile); printf("Enter the outfile name:\n"); scanf("%s",outfile); if((in=fopen(infile,"r"))==NULL) { printf("cannot open infile\n"); exit(0);} if((out=fopen(outfile,"w"))==NULL) { printf("cannot open outfile\n"); exit(0);} while(!feof(in))fputc(fgetc(in),out); fclose(in); fclose(out);}
文件大小：34KB
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