C语言程序问题，请大神帮忙写一下程序，并且写一下解释的备注，谢谢啦

#include#includechar CMP[99],A[9999];char CMP1[] = "teacher",CMP2[]="student";int next_word(int i){int p=i;while(A[p]>='A')p++;while(A[p]==32)p++;if(Ap]==0)return 0;return p;}int cmp(int i){int p=i,q=0;memset(CMP,0,sizeof(CM