TermIO

#include <stdio.h>

int main()
{
    int i;                                          
    int sum = 0;                                    
    char ch;                                        
  
    printf("Enter a sequence of integers:  ");      

    while (  scanf_s( "%d", &i ) == 1 ) {                       /* (A) */
        sum += i;                                             /* (B) */
        while ( ( ch = (char) getchar() ) == ' ' )                   /* (C) */
            ;              
        if ( ch == '\n' ) break;        
        ungetc( ch, stdin );                                  /* (D) */
    }
    printf( "The sum of the integers is: %d\n", sum );      
    return 0;
}

#include <iostream>
using namespace std;

int main() 
{
    int sum = 0;                              
    cout << "Enter a sequence of integers: "; 
    int i;                                    
    while ( cin >> i ) {                                          //(A)
        sum += i;                                       
        while ( cin.peek() == ' ' ) cin.get();                    //(B)
        if ( cin.peek() == '\n' ) break;                          //(C)
    }
    cout << "Sum of the numbers is: " << sum << endl;
    return 0;
}    

import java.io.*;

class TermIO {

    static boolean newline;                                       //(A)      

    public static void main( String[] args ) {  
        int sum = 0;
        System.out.println( "Enter a sequence of integers: " );
        while ( newline == false ) {
            String str = readString();                            //(B)
            if ( str != null ) {
                int i = Integer.parseInt( str );                  //(C)
                sum += i; 
            }
        }
        System.out.println( "Sum of the numbers is: " + sum );
    }

    static String readString() {                                  //(D)
        String word = "";                       
        try {
            int ch;
            while ( ( ch = System.in.read() ) == ' ' )            //(E)
                ;
            if ( ch == '\n' ) {                                   //(F)
                newline = true;                                   //(G)
                return null;                                      //(H)
            }
            word += (char) ch;                                    //(I)
            while ( ( ch = System.in.read() ) != ' ' 
                      && ch != '\n' && ch != '\r' )               //(J)
                word += (char) ch;                                //(K)
            if ( ch == '\r' || ch == '\n' ) newline = true;       //(L)
        } catch( IOException e ) {}
        return word;                                              //(M)
    }
}

' example demonstrating input from console terminal '

str = raw_input('Enter a sequence of integers: ')
a = str.split()
b = []
for v in a:
    b.append(int(v))
print 'The sum of the integers is %d' % sum(b)