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Programming in D: The Ultimate Guide for Software Engineers

Solution: Print Part of a String

Explore how to print a specific part of a string by identifying the first and last occurrences of a character in D programming. Understand the use of indexOf and lastIndexOf functions and string slicing to manipulate and output substrings effectively.

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Solution #

Here is the code that will print the part between the first “e” and the last “e” letter in a line.

D
import std.stdio;
import std.string;
void PrintPart() {
    string line = "this line has five words";
    ptrdiff_t first_e = indexOf(line, 'e');
    if (first_e == -1) {
        writeln("There is no letter e in this line.");
    } else {
        ptrdiff_t last_e = lastIndexOf(line, 'e');
        writeln(line[first_e .. last_e + 1]);
    }
}

Solution explanation:

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