What is the difference between string and uint(int) in solidity?

Question

// SPDX-License-Identifier: MIT

pragma solidity 0.8.16;

contract test7 {
  function getNum() public pure returns(uint256[4] memory,string memory) {
      string[4] memory _a = ['1','2','3','4'];

      uint256[4] memory a = [1,2,3,4]; // error

      return (a,_a);
  }
}

What is the difference between string and uint(int) in solidity?

As in the code above, why is uint not like string?

Answer 1

String is a datatype that supports using literal single(‘) and double(“ ”) quotes, while uint is a datatype that supports using positive integers. In the code above, uint is not like string due to this error: TypeError: Type uint8[4] memory is not implicitly convertible to expected type uint256[4] memory.