Recursively Print a String Backward - C++ Function

C++ examples for Function:Recursive Function

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Description

Recursively Print a String Backward

Demo Code

#include <iostream>
#include <string>

void stringReverse(const std::string&, int start = -1);

int main(int argc, const char* argv[]) {
    std::string string1 = "This is a string1";
    std::string string2 = "String 2 looks like this";

    std::cout << string1 << std::endl;
    stringReverse(string1, string1.length());

    std::cout << std::endl;//ww  w.ja  v  a  2s.c  om

    std::cout << string2 << std::endl;
    stringReverse(string2);

    return 0;
}
// recursively prints a string in reverse
void stringReverse(const std::string& st, int start) {
    // account for lack of start index
    if (start == -1) 
       start = st.length();

    // base case
    if (start == 0) {
        std::cout << st[start] << std::endl;
        return;
    }

    std::cout << st[start];

    stringReverse(st, --start);
}

Result


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