/*found*/char fun(char ch)/*found*/ if (ch=0 &ch= 9)/*found*/ return 9- (ch-0); return ch ;void fun(char *p, char *b) int i, k=0; while(*p) i=1; while( inext; while(p!=NULL) sum=sum+p-s; p=p-next; n+; ave=sum/n; return ave;