爲什麼getline不接受輸入

Question

從代碼的頂部正在工作，但令人驚訝的是，最後一個cin.get（con）不會等待輸入並終止接受任何輸入的程序，爲什麼會發生這種情況，請引導我做些什麼是錯我的代碼 -

#include<iostream.h> 
#include<conio.h> 
#include <string.h> 
struct country 
{ 
char country[30]; 
char capital[30]; 
float income; 
}; 

void main() 
{ 
    country c[3]; 
    clrscr(); 
    for(int i=0; i<3 ; i++) 
    { 
    cout << "\n Country's name : "; 
    cin.ignore(); 
    cin.getline(c[i].country, 30); 

    cout << "\n Country's capital :"; 
    cin.getline(c[i].capital,30); 

    cout << "\n Per capita income :"; 
    cin >> c[i].income; 

    } 

char ch = 'y'; 
char cap[30]; 
int flag = 0; 
cin.ignore(); 
cout << "\n Enter Capital name : "; 
cin.getline(cap, 30); 

    for(int k=0; k<3 ; k++) 
    { 
    flag = 0; 
    if(strcmp(c[k].capital,cap)==0) 
    { 
     flag = 1; 
    } 
    if(flag==1) 
    { 
     cout<< "\n" << c[k].country << "\t" << c[k].capital << "\t" << c[k].income << "\n\n" ; 
    } 
    } 
char con[30]; 
cout << "\n Enter Country name : "; 
cin.getline(con,30); 
    for(int m=0; m<3 ; m++) 
    { 
    flag = 0; 
    if(strcmp(c[m].country,con)==0) 
    { 
     flag = 1; 
    } 
    if(flag==1) 
    { 
     cout << c[m].capital << "\t" << c[m].income << "\n" ; 
    } 
    } 
} 

Answer 1

結合cin.operator<<和getline導致奇怪的行爲。所以，這段代碼也應改變

cout << "\n Country's capital :"; 
cin.getline(c[i].capital,30); 

cout << "\n Per capita income :"; 
cin >> c[i].income; 

可能是爲了

cout << "\n Country's capital :"; 
cin.getline(c[i].capital,30); 

char buf[50]; //I don't know how long your floats are 
cout << "\n Per capita income :"; 
cin.getline(buf); 
c[i].income = atof(buf); //#include <cstdlib>