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Problem realted to condition and loop and pattern

1.Question
=> Find n is +ve,-ve or 0?
code:-

import 'dart:io'; void main() { print('Om Namah Shivay'); int n = int.parse(stdin.readLineSync()!); if (n > 0) { print('$n is positive'); } else if (n == 0) { print('$n is zero'); } else { print('$n is positive'); } }
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2.Question
=>which one is greater in a and b?
code:-

import 'dart:io'; void main() { print('Om Namah Shivay'); print(greater()); } int greater({int? a, int? b}) { a = int.parse(stdin.readLineSync()!); b = int.parse(stdin.readLineSync()!); if (a > b) { return a; } else { return b; } }
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3.Question
Find that the alphabet is in lowercase or uppercase?
code:-

void main() { print('Om Namah Shivay'); print(Case(alpphabet: 'om')); } String Case({required String alpphabet}) { if (alpphabet == alpphabet.toUpperCase()) { return 'upperCase'; } else { return 'lowerCase'; } }
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loops
4.print 1 to n
code:-

void main() { print('Om Namah Shivay'); number(n: 10); } void number({required int n}) { int i = 1; while (i <= n) { print(i); i++; } }
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5.print sum of 1 to n?

void main() { print('Om Namah Shivay'); print(sum(n: 5)); } int sum({required int n}) { int i = 1, sum = 0; while (i <= n) { sum += i; i++; } return sum; }
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6.Find sum of even numbers in 1 to n?

code:-

void main() { print('Om Namah Shivay'); print(sum(n: 5)); } int sum({required int n}) { int i = 1, sum = 0; while (i <= n) { i % 2 == 0 ? sum += i : sum += 0; i++; } return sum; }
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7.convert f to c(temp.)
code:-

void main() { print('Om Namah Shivay'); print(celsiusConvertor(f: 5.23)); } double celsiusConvertor({required double f}) { return (f - 32) * 5 / 9; }
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8.n is prime or not?

code:-

void main() { print('Om Namah Shivay'); print(prime(n: 56)); } String prime({required double n}) { int i = 2; String ans = 'prime'; while (i < n) { if (n % i == 0) { ans = 'non-prime'; break; } } return ans; }
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9.Make this pattern

Image description
code:-

void main() { print('Om Namah Shivay'); print(pattern()); } String pattern() { int i = 1; String star = '*'; while (i <= 3) { print(star * 4); i++; } return ''; }
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10.Make this pattern

111
222
333

code:-

void main() { print('Om Namah Shivay'); print(pattern()); } String pattern() { int i = 1; while (i <= 3) { String star = i.toString(); print(star * 3); i++; } return ''; }
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I understood

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