Functions >> Exercises

Counting occurrences

Task: Write a function that takes a string and a character, and returns the number of times the character appears in the string.

Number of vowels

Task: Write a function that takes a string and returns the number of vowels in that string.

Anagram detection

Task: Write a function that takes two strings and returns true if the strings are anagrams of each other, and false otherwise.

Hint

Count the number of occurrences of each character in each string, and compare the two counts.

Convert int to string

Task: Write a function that takes an integer and returns a string representation of that integer. Do not use standard library functions like std::to_string or its equivalents.

Hint

Use string.insert(0, 1, 'x') to insert a character at the beginning of a string, e.g:

Inserting a character at the beginning of a string

std::string s = "abc";
s.insert(0, 1, 'x');
// s is now "xabc"