+例3文件拷贝 #include <stdio. h> mainO i FILE *in, *out; char ch,infile 10, outfile 10l; scanf("%s"infile); scanf(%os",outHile); if((in= fopen(infile, "r)==NULL i printf( Cannot open infile.n") exit(0); if(out=fopen(outfile, W==NULL i printf( " Cannot open outfile. n); ex while(feof(in)) fputc(fgetc(in), out) fclose(in); fclose(out);例3 文件拷贝 #include <stdio.h> main() { FILE *in, *out; char ch,infile[10] , outfile[10]; scanf("%s",infile); 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); }