shahzaintariq

pragma solidity ^0.6.1;

interface ERC20TokenInterface {
    function totalSupply() external view returns (uint);
    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint);
    function balanceOf(address tokenOwner) external view returns (uint256);
    function allowance(address tokenOwner, address spender) external view returns (uint remaining);
    function transfer(address to, uint tokens) external returns (bool success);

shahzaintariq

pragma solidity ^0.5.0;


interface IAbsCal{
    function add(uint _a,uint _b) external returns(uint);
    function sub(uint _a,uint _b) external returns(uint);
    function mul(uint _a,uint _b) external returns(uint);
    function div(uint _a,uint _b) external returns(uint);
}

shahzaintariq

pragma solidity ^0.5.11;

contract class{
    struct bank {
    string name;
    uint age;
    bool ispaid;
    }
    
    bank hbl;

shahzaintariq

pragma solidity ^0.5.11;

contract class{
    struct bank {
    string name;
    uint age;
    bool ispaid;
    }
    
    bank hbl;