MailingList, C (gcc)

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//gcc 7.4.0
//MailingList: write a program that displays menu of a mailing list ,containing enter, search and display functions;reading user input it executes the chosen function;
//this code is created by Rezaul Hoque on March 21,2022;contact: jewelmrh@yahoo.com,Dhaka, Bangladesh
//note: codes shared by Rezaul Hoque on rextester are not for sale; they are created and shared to facilitate the algorithm learning process; many like Hoque use this platform to practice programming ;Rezaul hopes his contribution helps others to fine tune their learning;

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int n=3;
struct mail{
char name[30];
char city[30];
int house;
int road;
int code;
}m[3];
void enter();
void search();
void display();
void enter ()
{
printf("\nEnter name,city, house,road and postal code:\n");
for(int k=0; k<n;k++)
scanf("%s\t%s\t%d\t%d\t%d\n",m[k].name,m[k].city,&m[k].house,&m[k].road, &m[k].code);
}
void display(){
int i;
printf("name\tcity\thouse\troad\tcode:\n");
for(i=0;i<n;i++){
printf("%s",m[i].name);
printf ("\t%s", m[i].city);
printf("\t%d",m[i].house);
printf("\t%d",m[i].road);
printf("\t%d",m[i].code);
printf("\n");}
}

void search(){
char name [80];
printf("name:");
int find=0;
scanf("%s",name);
for(int i=0; i<n;i++)
if(!strcmp(m[i].name,name)){
printf("Item found:\n");
printf("name\tcity\thouse\troad\tcode:\n");
printf("%s",m[i].name);
printf ("\t%s", m[i].city);
printf("\t%d",m[i].house);
printf("\t%d",m[i].road);
printf("\t%d",m[i].code);
find=1;
printf("\n");
}
if(!find) printf("Item not found.\n");
}

int main(){
int choice;

printf(" (1)Enter (2) Search (3) Display (4)Quit\n");

do{
scanf("%d",&choice);

switch(choice){
     case 1:  enter();
     break;
    
     case 2:  search();
     break;
     case 3:  display();
     break;
     }
}while(choice!=4);

return 0;
}

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Compilation time: 0.12 sec, absolute running time: 0.16 sec, cpu time: 0.01 sec, memory peak: 5 Mb, absolute service time: 0,46 sec