#include<stdio.h>
#include<string.h> // for strcat,cpy...
#include<stdlib.h> // for atof

void show(int id, char* FullName, float M){
    printf("Your Name is %s", FullName);
    printf(" and your ID is %d \n",id);
    printf(" and your mark is %f \n",M);
}

int main(){
    char FirstName[20];
    char LastName[20];
    char FullName[40];
    unsigned char Mark[5];
    int ID;

    printf("Please Enter Your ID: ");
    scanf("%d", &ID);
    printf("please enter your first name: ");
    scanf("%s", FirstName);
    printf("Please enter your last name: ");
    scanf("%s", LastName);

    strcpy(FullName,FirstName);
    strcat(FullName," ");
    strcat(FullName,LastName);

    strcpy(Mark,"85.5");
    float M = atof(Mark);

    show(ID,FullName,M);

    return 0;
}