C :

struct number
{
int id,age;
char name[100],sex[5];
}num[21];

int main(int argc, char* argv[])
{int i,n,m,j;
scanf("%d",&n);
while(n--)
{
scanf("%d",&m);
for(i=0;i<m;i++)
scanf("%d%s%s%d",&num[i].id,&num[i].name,&num[i].sex,&num[i].age);
scanf("%d",&j);
for(i=0;i<m;i++)
if(j==num[i].id){printf("%d %s %s %d\n",num[i].id,num[i].name,num[i].sex,num[i].age);break;}
}
	return 0;
}

C++ :

#include <iostream>
#include <cstdio>
using namespace std;

struct Stu {
    int id, age;
    char na[100], sex[100];
};

int main()
{
    //freopen("test.in", "r", stdin);
    //freopen("test.out", "w", stdout);
    int n, t;
    Stu a[20];
    char str[80];
    int st_no;
    scanf("%d", &t);
    while (t--) {
        scanf("%d", &n);
        for (int i = 0; i < n; ++i)
            scanf("%d %s %s %d", &a[i].id, &a[i].na, &a[i].sex, &a[i].age);
        scanf("%d", &st_no);
        for (int i = 0; i < n; ++i)
            if (a[i].id == st_no)
                printf("%d %s %s %d\n", a[i].id, a[i].na, a[i].sex, a[i].age );
    }
    return 0;
}

Java :

import java.util.Scanner;
import java.util.StringTokenizer;
public class Main {
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int m=sc.nextInt();
		while(m-->0){
			int n=sc.nextInt();
			String stop=sc.nextLine();
			String s[][]=new String[n][4];
			for(int i=0;i<s.length;i++){
				StringTokenizer st=new StringTokenizer(sc.nextLine()," ");
				s[i][0]=st.nextToken();
				s[i][1]=st.nextToken();
				s[i][2]=st.nextToken();
				s[i][3]=st.nextToken();
			}
			String tempStr=sc.next();
			for(int i=0;i<s.length;i++){
				if(tempStr.equals(s[i][0])){
					System.out.println(s[i][0]+" "+s[i][1]+" "+s[i][2]+" "+s[i][3]);
					break;
				}
			}
		}
		sc.close();
	}
}