In this tutorial we will learn how we can count the number of words in a sentence using C++. This type of program is often asked in Job and Examinations. With the help of this program you will learn about for loop, if satement and the use of strings in C++. When you run the program you need to input a sentence and the for loop will search the space in the sentence. When it gets any space it increases the value of the variable countword by 1 and thus the program count words in any given sentence.