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contracts...ifelse.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8;

contract ifElse{
    //we can't use if and else on contract level
    
    function func(uint _x) public pure returns(string memory){
        string memory val;
        if(_x>100){
            val = "value greater than 100";
        }
        else if(_x<100){
            val = "value smaller than 100";
        }else{
            val = "value equal to 100";
        }

        return val;
    }

    function subjectResult(uint _marks) public pure returns(string memory){
        string memory result;
        if(_marks>=90 && _marks<=100){
            result = "Your Subject GPA is 4";
        }else if(_marks<90 && _marks>=85){
            result = "your subject gpa is 3.7";
        }else if(_marks<85 && _marks>=80){
            result = "your subject gpa is 3.3";
        }else if(_marks<80 && _marks>=75){
            result =  "your subject gpa is 3";
        }else if(_marks<75 && _marks>=70){
            result = "your subject gpa is 2.7";
        }else if(_marks<70 && _marks>=65){
            result = "your subject gpa is 2.3";
        }else if(_marks<65 && _marks>50){
            result = "your subject gpa is 2";
        }else if(_marks <=50){
            result = "your subject is failed";
        }else if(_marks >100){
            result = "your entered invalid marks";
        }

        return result;
    }
}