用指针的方式对一个结构数组里的元素进行删除，再显示出来，不会了，谢谢大佬

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

struct Tongxunlu{
        char *name;
        char *sex;
        char *number;
    };

void xianshi(struct Tongxunlu *p,int n);
void caxun1(struct Tongxunlu *p,int n);
void caxun2(struct Tongxunlu *p,int n);
void tianjia(struct Tongxunlu *p,int *n);
void shanchu(struct Tongxunlu *p,int *n);

int main(){
    struct Tongxunlu student[]={
        {"王明","男","13598832373"},
        {"李芳","女","13243552545"},
        {"李华","男","15765463662"},
        {"小明","男","18842352552"},
        {"小兰","女","16765645646"},
        {"小王","男","17343244324"},
        {"王凯","男","17743244324"}
        };
    int n = sizeof(student)/sizeof(student[0]);
    printf("%d",n);
    shanchu(student,&n);
    xianshi(student,n);
    return 0;
}

void xianshi(struct Tongxunlu *p,int n){
    printf("%d",n);
    p = (Tongxunlu*)malloc(sizeof(Tongxunlu)*n);
    printf("\n\t*********班级通讯录*********\n\n");
    printf("\t姓名\t性别\t  电话号码\n");
    while(n--){
            printf("\t%s\t %s\t%s\n",p->name,p->sex,p->number);
            p++;
    }
}

void shanchu(struct Tongxunlu *p,int *n){
    char name[10];
    int m=*n;
    while(m--){
            printf("\t%s\t %s\t%s\n",p->name,p->sex,p->number);
            p++;
    }
    printf("请输入需要删除的姓名：");
    scanf("%s",name);
    while(m--){
        if(strcmp(name,p->name)!=0){
            *p=*p;
            p++;
            }
    }
    *n=*n-1;
    m=m-1;
    while(m--){
            printf("\t%s\t %s\t%s\n",p->name,p->sex,p->number);
            p++;
    }
}