允许用户输入名字和姓氏； 向用户显示全名（第一个+最后一个）

Question

I know this is something really simple but I can't figure out what I'm missing or doing wrong. I think it might be something with the char variables. This is what I have so far:

#include<stdio.h> 
#include "stdafx.h"
#include<iostream>

using namespace std;

int main() 
{ 
char fname[20],lname[20];

cout<<"Please enter your First Name:";
cin>>"fname";
cout<<"Please enter your Last Name:";
cin>>"lname";

cout<<"Your full name is:"<<fname<<lname<<endl;

int a,b = 0;

for(a=0;a<=50;a++) 
{ 
if(a%3!=0&&a%4!=0&&a%5!=0) 
{ 
printf(" %d",a);
b++;
} 
} 
printf("\nNos of counts%d",b); 

} 

Answer 1

cin>>"fname";

You are trying to extract into the string literal "fname" . It seems you meant to extract into the variable fname :

cin>>fname;

Answer 2

Just going to make a couple suggestions since Joseph answered the question. Add a space between first and last name so it's not printing there name as one word.

cout <<"Your full name is: "<< fname << ' '  << lname << endl;

when declaring b to 0, you didn't assign a to anything.

int a = 0, b = 0;

and cout is much more powerful than printf, you shouldn't use C syntax in C++ unless there is no other option.

cout << a << ' ';

and

cout  << "\nNos of counts " << b;