{"post":"

Logic:

In this method, we find out all nulls and ignore all the nulls in a string and store the remaining contents in another string.

Algorithm:

Take a string input.
We run a loop, character by character to find the null/white space.
In the loop, we check the presence of null character, when encountered, we increment the index.
Next, we input the remaining characters in the new string, newstr.
Output the new string.

Code:

//removing blank space\r\n#include <iostream>\r\nusing namespace std;\r\nint main()\r\n{\r\n\tstring str;\r\n    cout<<\"Enter the string \";\r\n    getline(cin,str);\r\n\tint len=str.length();\r\n\tchar newstr[len];\n//Removing one or more blank spaces from string\r\nint i=0,j=0;\r\nwhile(str[i]!='\\0')\r\n{\r\n\twhile(str[i] == ' ')//using loop to remove consecutive blanks\r\n\t\ti++;\r\n\tnewstr[j]=str[i]; //newstr[j++]=str[i++] we can also use this instead\r\n\ti++;\r\n\tj++;\r\n}\r\nnewstr[len-1]='\\0';//terminating newstr, we use -1, as j was a post increment.\r\ncout&lt;&lt;\"\\n String after removal of blank spaces is:\"&lt;&lt;newstr;\r\nreturn 0;\n
\n}

Output:
\n

Enter the string: This Is A String Which Does Not Have Space!\r\nString after removal of blank spaces is:ThisIsAStringWhichDoesNotHaveSpace!

\n","title":"Program to remove whitespaces from string in C++","authorDetails":{"name":"Juhi Kamdar","slug":"juhi-kamdar"},"description":"Learn to write a Program to remove whitespaces from string in C++ by searching and removing all the null characters from the string.","slug":"cpp/examples/removing-the-blank-spaces-from-string-in-cpp/","articleId":"636a83457bb1ce5072622c14","bookmarkStatus":{"isBookmarked":false,"bookmarkId":null}}