venu-stack

use std::io;

fn patterns()->i32{
        println!("please enter your age:");
    let mut age = String::new();
    io::stdin().read_line(&mut age).expect("invalid input");
    let age_num:i32=match age.trim().parse(){
         Ok(num)=>num,
         Err(_)=>{
            println!("no input");

venu-stack

//SPDX-License-Identifier-MIT
pragma solidity ^ 0.8.4;

import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/ERC20.sol";

library SafeMath {
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    if (a == 0) {
      return 0;
    }

venu-stack

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.3;

contract MyMultiSig{
    event Deposit(address indexed sender,uint amount,uint balance);
    event SubmitTransaction (
        address indexed owner,
        uint indexed txIndex,
        address indexed to,
        uint value,