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Can someone please give me some problems or activities using if, else/if, and nested if statements???? i need 5 for each.. it would be better if u give the c++ codes for each problem..:)

this will be for my project.. hope u guyz helpme:icon_cheesygrin:

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  • Latest Post Latest Post by wildgoose

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Following 's point about practising, here are five simple problem prompts for each construct (if, else/if, nested if) and compact C++ examples for one representative problem in each group. The prompts are beginner-friendly and suitable for a short school project.

If-only problems:

  • Check whether an integer is even.
  • Check whether an integer is positive.
  • Check whether a character is a vowel (a, e, i, o, u).
  • Check whether input equals zero.
  • Check whether a number is divisible by 3.
#include <iostream>

int main() {
    int n;
    std::cout << "Enter an integer: ";
    if (!(std::cin >> n)) return 0;
    if (n % 2 == 0) {
        std::cout << n << " is even\n";
    }
    return 0;
}

Else/if chain problems:

  • Convert numeric score to letter grade (A/B/C/D/F).
  • Classify a number as negative / zero / positive.
  • Map month number (1..12) to quarter (Q1..Q4).
  • Age category: child / teen / adult / senior.
  • Temperature classification: cold / mild / hot.
#include <iostream>

int main() {
    int score;
    std::cout << "Score (0-100): ";
    if (!(std::cin >> score)) return 0;
    if (score < 0 || score > 100) {
        std::cout << "Invalid score\n";
    } else if (score >= 90) {
        std::cout << "A\n";
    } else if (score >= 80) {
        std::cout << "B\n";
    } else if (score >= 70) {
        std::cout << "C\n";
    } else if (score >= 60) {
        std::cout << "D\n";
    } else {
        std::cout << "F\n";
    }
    return 0;
}

Nested-if problems:

  • Leap year check (divisible by 4, special rules for 100 and 400).
  • Validate username then password (check username, then nested password check).
  • Largest of three numbers using nested comparisons.
  • Triangle validity then type (equilateral / isosceles / scalene).
  • ATM withdrawal: check balance, then check denomination rules.
#include <iostream>

int main() {
    int year;
    std::cout << "Year: ";
    if (!(std::cin >> year)) return 0;
    if (year % 4 == 0) {
        if (year % 100 == 0) {
            if (year % 400 == 0) {
                std::cout << year << " is a leap year\n";
            } else {
                std::cout << year << " is not a leap year\n";
            }
        } else {
            std::cout << year << " is a leap year\n";
        }
    } else {
        std::cout << year << " is not a leap year\n";
    }
    return 0;
}

Quick tips: always use braces for clarity, validate input (check ranges and scan success), test edge cases (0, negatives, boundary scores), and keep indentation consistent so nested ifs remain readable.

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Member Avatar for anonymous23

ps....


SIMPLE problems only!! :)

Member Avatar for wildgoose

We don't need to give you only. Cruise the posts and pick out a few you like!
And then do them yourself!

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