使用Stringstream从字符串删除空格

从字符串删除空格的解决方案已经发布在这里。在本文中，讨论了另一个使用stringstream的解决方案。

算法

1. Enter the whole string into stringstream.
2. Empty the string.
3. Extract word by word and concatenate to the string.

程序1：使用EOF。

// C++ program to remove spaces using stringstream
#include 
using namespace std;
  
// Function to remove spaces
string removeSpaces(string str)
{
    stringstream ss;
    string temp;
  
    // Storing the whole string
    // into string stream
    ss << str;
  
    // Making the string empty
    str = "";
  
    // Running loop till end of stream
    while (!ss.eof()) {
  
        // Extracting word by word from stream
        ss >> temp;
  
        // Concatenating in the string to be
        // returned
        str = str + temp;
    }
    return str;
}
  
// Driver function
int main()
{
    // Sample Inputs
    string s = "This is a test";
    cout << removeSpaces(s) << endl;
  
    s = "geeks for geeks";
    cout << removeSpaces(s) << endl;
  
    s = "geeks quiz is awsome!";
    cout << removeSpaces(s) << endl;
  
    s = "I love     to     code";
    cout << removeSpaces(s) << endl;
  
    return 0;
}

输出：

Thisisatest
geeksforgeeks
geeksquizisawsome!
Ilovetocode

程序2：使用getline()。

// C++ program to remove spaces using stringstream
// and getline()
#include 
using namespace std;
  
// Function to remove spaces
string removeSpaces(string str)
{
    // Storing the whole string
    // into string stream
    stringstream ss(str);
    string temp;
  
    // Making the string empty
    str = "";
  
    // Running loop till end of stream
    // and getting every word
    while (getline(ss, temp, ' ')) {
        // Concatenating in the string
        // to be returned
        str = str + temp;
    }
    return str;
}
// Driver function
int main()
{
    // Sample Inputs
    string s = "This is a test";
    cout << removeSpaces(s) << endl;
  
    s = "geeks for geeks";
    cout << removeSpaces(s) << endl;
  
    s = "geeks quiz is awsome!";
    cout << removeSpaces(s) << endl;
  
    s = "I   love     to     code";
    cout << removeSpaces(s) << endl;
  
    return 0;
}
  
// Code contributed by saychakr13

输出：

Thisisatest
geeksforgeeks
geeksquizisawsome!
Ilovetocode

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