有以下程序 #include main() { FILE *fp; int i, a[6]={1,2,3,4,5,6}, k; fp = fopen("data.dat", "w+b"); fwrite(&a[0], sizeof(int), 1, fp); for (i=1; i<6; i++) { fseek(fp, 0L, 0); fread(&k, sizeof(int), 1, fp); fseek(fp, 0L, 0); a[i] +=k; fwrite(&a[i], sizeof(int), 1, fp); } rewind(fp); fread(&k, sizeof(int), 1, fp); fclose(fp); printf("%d\n", k); } 程序的运行结果是