题目:求0—7所能组成的奇数个数。程序源代码:main(){long sum=4,s=4;int j;for(j=2;j<=8;j++)/*j is place of number*/{ printf("\n%ld",sum);if(j<=2)s*=7;elses*=8;sum+=s;}printf("\nsum=%ld",sum);}麻烦重写个好点的,加注释的程序,这个我看不懂哈!!!