Programming Sprints to Try
To practice and develop your C++ fluency, try these programming sprints.
Prompts:
- Program 1: prints a user-inputted number
- Program 2: prints sum of two user-inputted numbers
- Variation 1 entirely in
main - Variation 2, with a function responsibly for entering a number,
enterNumber - Variation 3, with two functions,
enterNumberandgetSum
- Variation 1 entirely in
- Program 3: prints quotient and remainder of two user-inputted numbers
- Variation 1 entirely in
main - Variation 2, with two function,
getQuotientandgetRemainder - Variation 3, with a function
getSolutionwhich returns a vector containing quotient and remainder
- Variation 1 entirely in
- Program 4: prints whether a user-inputted year is a leap year
- Variation 1 entirely in
main - Variation 2 entirely in
main, but checks if a valid year is entered - Variation 3 entirely in
main, but continues asking until a valid year is entered
- Variation 1 entirely in
- Program 5: prints the
10x10multiplication table - Program 6: checks if a user-inputted char is a vowel or consonant
- Variation 1, with an
ifstatement - Variation 2, with an array
- Variation 3, with a vector
- Variation 4, with a function responsible for vowel-checking
- Variation 1, with an
- Program 7: counts how many vowels and how many consonants in an entered sentence
- Variation 1, with
isVowelfunction - counts non-letters as consonants - Variation 2, considers only letters by checking ASCII ranges in
isLetterfunction - Variation 3, considers only letters by
isalphafunction inisLetterfunction
- Variation 1, with
Program 1
Write a program that prints a number entered by the user. (5 minutes)
#include <iostream>
using namespace std;
int main() {
int num;
cout << "Enter a number: ";
cin >> num;
cout << "The number you have entered is: " << num << endl;
return 0;
}
Program 2
Write a program that calculates the sum of two user-inputted numbers. (5 minutes)
Variation 1
#include <iostream>
using namespace std;
int main() {
int a, b;
cout << "Enter a number: ";
cin >> a;
cout << "Enter another number: ";
cin >> b;
cout << "The sum of " << a << " and " << b << " is " << a + b << endl;
return 0;
}
Variation 2
#include <iostream>
using namespace std;
int enterNumber() {
int num;
cout << "Enter a number: ";
cin >> num;
return num;
}
int main() {
int a = enterNumber();
int b = enterNumber();
cout << "The sum of the numbers " << a << " and " << b << " is " << a + b << endl;
return 0;
}
Variation 3
#include <iostream>
using namespace std;
int enterNumber() {
int num;
cout << "Enter a number: ";
cin >> num;
return num;
}
int getSum(int num_1, int num_2) {
return num_1 + num_2;
}
int main() {
int a = enterNumber();
int b = enterNumber();
int sum = getSum(a, b)
cout << "The sum of the numbers " << a << " and " << b << " is " << sum << endl;
return 0;
}
Program 3
Write a program that prints the quotient and remainder of two user-inputted numbers. (5 minutes)
Variation 1
#include <iostream>
using namespace std;
int main() {
int a, b;
cout << "Enter a number: ";
cin >> a;
cout << "Enter another number: ";
cin >> b;
cout << "Quotient = " << a / b << " with Remainder = " << a % b << endl;
return 0;
}
Variation 2
#include <iostream>
using namespace std;
int enterNumber() {
int num;
cout << "Enter a number: ";
cin >> num;
return num;
}
int getQuotient(int a, int b) {
return a / b;
}
int getRemainder(int a, int b) {
return a % b;
}
int main() {
int a = enterNumber();
int b = enterNumber();
int quotient = getQuotient(a, b);
int remainder = getRemainder(a, b);
cout << "Quotient = " << quotient << " with Remainder = " << remainder << endl;
return 0;
}
Variation 3
#include <iostream>
#include <vector>
using namespace std;
int enterNumber() {
int num = 0;
cout << "Enter a number: ";
cin >> num;
return num;
}
vector<int> getSolution(int a, int b) {
vector<int> solution(2);
int q = a / b;
int r = a % b;
solution.at(0) = q;
solution.at(1) = r;
// ALTERNATIVE to declaring/defining vector solution
// vector<int> solution;
// solution.push_back(q);
// solution.push_back(r);
return solution;
}
int main(){
int a = enterNumber();
int b = enterNumber();
vector<int> v = getSolution(a, b);
cout << "Quotient = " << v.at(0) << "; Remainder = " << v.at(1) << endl;
return 0;
}
Program 4
Write a program that prints whether a user-inputted number (year) is a leap year. (5 minutes)
Variation 1
#include <iostream>
using namespace std;
int main() {
int year = 2018;
cout << "Enter a number: ";
cin >> year;
if (year % 4 == 0) {
cout << "The year " << year << " is a leap year." << endl;
} else {
cout << "The year " << year << " is NOT a leap year." << endl;
}
return 0;
}
Variation 2
#include <iostream>
using namespace std;
int main() {
int year = 2018;
cout << "Enter a number: ";
cin >> year;
if (year < 0) {
cout << "That is not a valid year!" << endl;
} else {
if (year % 4 == 0) {
cout << "The year " << year << " is a leap year." << endl;
} else {
cout << "The year " << year << " is NOT a leap year." << endl;
}
}
return 0;
}
Variation 3
#include <iostream>
using namespace std;
int main() {
int year = -1;
while (year < 0) {
cout << "Enter a number: ";
cin >> year;
}
if (year % 4 == 0) {
cout << "The year " << year << " is a leap year." << endl;
} else {
cout << "The year " << year << " is NOT a leap year." << endl;
}
return 0;
}
Program 5
Write a program that generates a 10 by 10 multiplication table (shown below). Formatting isn’t necessary. (5 minutes)
#include <iostream>
using namespace std;
int main() {
for (int row = 1; row <= 10; row++) {
for (int col = 1; col <= 10; col++) {
int cell = row * col;
cout << cell << " ";
}
cout << endl;
}
return 0;
}
Program 6
Write a program that checks if a user-inputted character is a vowel or a consonant (8 minutes)
Variation 1
#include <iostream>
using namespace std;
int main() {
char sym;
cout << "Enter a character: ";
cin >> sym;
if (sym == 'a' || sym == 'e' || sym == 'i' || sym == 'o' || sym == 'u' ||
sym == 'A' || sym == 'E' || sym == 'I' || sym == 'O' || sym == 'U') {
cout << sym << " is a vowel." << endl;
} else {
cout << sym << " is a consonant." << endl;
}
return 0;
}
Variation 2
#include <iostream>
using namespace std;
int main() {
char vowels[5] = {'a', 'e', 'i', 'o', 'u'};
bool isVowel = false; // assume it's a consonant unless proven to be a vowel
char c;
cout << "Enter a symbol: " << endl;
cin >> c;
for (int i = 0; i < 5; i++) {
if (c == vowels[i]) {
isVowel = true;
}
}
if (isVowel == true) {
cout << c << " is a vowel." << endl;
} else {
cout << c << " is a consonant." << endl;
}
return 0;
}
Variation 3
#include <iostream>
#include <vector>
using namespace std;
int main() {
vector<char> vowels = {'a', 'e', 'i', 'o', 'u'};
/*
vowels.push_back('a');
vowels.push_back('e');
vowels.push_back('i');
vowels.push_back('o');
vowels.push_back('u');
*/
bool isVowel = false; // assume it's a consonant unless proven to be a vowel
char c;
cout << "Enter a symbol: " << endl;
cin >> c;
for (int i = 0; i < 5; i++) {
if (c == vowels.at(i)) {
isVowel = true;
}
}
if (isVowel == true) {
cout << c << " is a vowel." << endl;
} else {
cout << c << " is a consonant." << endl;
}
return 0;
}
Variation 4
#include <iostream>
using namespace std;
bool isVowel(char sym) {
if (sym == 'a' || sym == 'e' || sym == 'i' || sym == 'o' || sym == 'u' ||
sym == 'A' || sym == 'E' || sym == 'I' || sym == 'O' || sym == 'U') {
return true;
} else {
return false;
}
}
int main() {
char c;
cout << "Enter a symbol: " << endl;
cin >> c;
bool provenVowel = false;
for (int i = 0; i < 5; i++) {
if (isVowel(c)) {
provenVowel = true;
}
}
if (provenVowel == true) {
cout << c << " is a vowel." << endl;
} else {
cout << c << " is a consonant." << endl;
}
return 0;
}
Program 7
Write a program that counts how many vowels and how many consonants in an user-inputted sentence (10 minutes)
Variation 1
#include <iostream>
#include <vector>
#include <string>
using namespace std;
bool isVowel(char sym) {
if (sym == 'a' || sym == 'e' || sym == 'i' || sym == 'o' || sym == 'u' ||
sym == 'A' || sym == 'E' || sym == 'I' || sym == 'O' || sym == 'U') {
return true;
} else {
return false;
}
}
int main() {
string sentence = "";
cout << "Enter a word/sentence: " << endl;
getline(cin, sentence);
int vowelCounter = 0;
int consonantCounter = 0;
for (int i = 0; i < sentence.size(); i++) {
if (isVowel(sentence.at(i)))
vowelCounter++;
else
consonantCounter++;
}
cout << "Consonants = " << consonantCounter << "; Vowels = " << vowelCounter << endl;
return 0;
}
Variation 2
#include <iostream>
#include <vector>
#include <string>
using namespace std;
bool isVowel(char sym) {
if (sym == 'a' || sym == 'e' || sym == 'i' || sym == 'o' || sym == 'u' ||
sym == 'A' || sym == 'E' || sym == 'I' || sym == 'O' || sym == 'U') {
return true;
} else {
return false;
}
}
bool isLetter(char sym) {
int val = (int)sym; // give me the ASCII value of the char
if ((val >= 65 && val <= 90) || (val >= 97 && val <= 122)) {
return true; // it's a letter
} else {
return false;
}
}
int main() {
string sentence = "";
cout << "Enter a word/sentence: " << endl;
getline(cin, sentence);
int vowelCounter = 0;
int consonantCounter = 0;
for (int i = 0; i < sentence.size(); i++) {
if (isLetter(sentence.at(i))) {
if (isVowel(sentence.at(i)))
vowelCounter++;
else
consonantCounter++;
}
}
cout << "Consonants = " << consonantCounter << "; Vowels = " << vowelCounter << endl;
return 0;
}
Variation 3
#include <iostream>
#include <vector>
#include <string>
using namespace std;
bool isVowel(char sym) {
if (sym == 'a' || sym == 'e' || sym == 'i' || sym == 'o' || sym == 'u' ||
sym == 'A' || sym == 'E' || sym == 'I' || sym == 'O' || sym == 'U') {
return true;
} else {
return false;
}
}
bool isLetter(char sym) {
int val = isalpha(sym);
if (val != 0) { // it's a letter
return true;
} else {
return false;
}
}
int main() {
string sentence = "";
cout << "Enter a word/sentence: " << endl;
getline(cin, sentence);
int vowelCounter = 0;
int consonantCounter = 0;
for (int i = 0; i < sentence.size(); i++) {
if (isLetter(sentence.at(i))) {
if (isVowel(sentence.at(i)))
vowelCounter++;
else
consonantCounter++;
}
}
cout << "Consonants = " << consonantCounter << "; Vowels = " << vowelCounter << endl;
return 0;
}