C + + self-study note _string Test programming Question _ C + + Primer

Today, "C + + Primer" finish the 9th chapter, about string type, find a way to test the effect of the topic.

Title Description:

Enter a string to end with a carriage return (string length <=100). The string consists of several words, separated by a space, and all the words are case-sensitive. Now you need to replace one of these words with another word and output the replaced string.

Input:

Multiple sets of data. Each set of data input consists of 3 rows, the 1th line is a string with multiple words, the 2nd line is the word a to be replaced, and (length <=100) line 3rd is the word b that will be replaced. (length <=100) s, a, b the front and the back have no spaces.

Output:

Each test data output has only 1 rows, replacing all word a in s with the string after B.

Sample input:

Want someone to help Youyoui

Sample output:

I want someone to help you


With the STL, good cool!!
Code:

#include <iostream>#include<string>#include<cstdio>using namespacestd;intMain () {stringStr,word; stringword_a,word_b;  while(Getline (cin,str)) {getline (cin,word_a);        Getline (cin,word_b); intstartpos=0, endpos=0;  while((Startpos=str.find_first_not_of (" ", endpos))! =string:: NPOs) {Endpos=str.find_first_of (" ", startpos); Word.assign (Str,startpos,endpos-startpos); if(word==word_a)            {str.replace (Startpos,word_a.size (), word_b); }} cout<<str<<Endl; }    return 0;} /************************************************************** problem:1111 User:lcyvino language:c++ Re sult:accepted time:0 Ms memory:1520 kb****************************************************************/

Title Description:

For all words in a string, if the first letter of the word is not an uppercase letter, the first letter of the word becomes uppercase.
In the string, the words are separated by a white space character, including a space ('), a tab (' \ t '), a carriage return (' \ R '), and a newline character (' \ n ').

Input:

Enter a line: the string to be processed (less than 100 in length).

Output:

There may be multiple sets of test data, for each set of data,
Output one line: the converted string.

Sample input:

If so, you already has a Google account. You can sign in to the right.

Sample output:

If So, you already has A Google account. You Can sign in to the right.

Source:

2008 the computer research of the graphics Laboratory of Peking University the real Problem

There is nothing to say, or STL.

Code:

#include <iostream>#include<string>using namespacestd;intMain () {stringstr; stringSeperators (",. \t\r\n");  while(Getline (cin,str)) {intstartpos=0, endpos=0;  while((Startpos=str.find_first_not_of (seperators,endpos))! =string:: NPOs) {Endpos=str.find_first_of (Seperators,startpos); if(Islower (Str[startpos])) {Str[startpos]=ToUpper (Str[startpos]); }} cout<<str<<Endl; }    return 0;} /************************************************************** problem:1121 User:lcyvino language:c++ Re sult:accepted time:10 Ms memory:1520 kb****************************************************************/

Title Description:

Compile a program, read the user input, and "." The end of a line of text, counting the total number of words, and separately output each word contains how many characters.
(the part that is separated by one or more spaces is a single word)

Input:

The input includes 1 lines of string to "." Ends with multiple words in the string, separated by one or more spaces between the words.

Output:

There may be multiple sets of test data, for each set of data,
The number of letters that each word in the output string contains.

Sample input:

Hello how is you.

Sample output:

5 3 3 3


Code:

#include <iostream>#include<string>using namespacestd;intMain () {stringstr; stringSeperators (" ."); intwordlength;  while(Getline (cin,str)) {BOOLisfirst=true; intstartpos=0, endpos=0;  while((Startpos=str.find_first_not_of (seperators,endpos))! =string:: NPOs) {Endpos=str.find_first_of (Seperators,startpos); Wordlength=endpos-startpos; if(isFirst) {cout<<wordlength; IsFirst=false; }Else{cout<<" "<<wordlength; }} cout<<Endl; }    return 0;} /************************************************************** problem:1182 User:lcyvino language:c++ Re sult:accepted time:20 Ms memory:1520 kb****************************************************************/

C + + self-study note _string Test programming Question _ C + + Primer