+ 4

Change a string of a fraction into integer and do math with it and returns as a fraction.

https://code.sololearn.com/cmy8Ux5D458v/?ref=app I have been looking for a way for sometime and I can’t find any? Anyone have an idea.

13th Apr 2022, 8:05 AM
Yones Mussa
13 Answers
+ 1
That helps alot i appreciate the hep Jayakrishna🇮🇳
15th Apr 2022, 3:27 AM
Yones Mussa
0
Example?
13th Apr 2022, 8:48 AM
Jayakrishna 🇮🇳
0
Jayakrishna🇮🇳 What do you mean bu example?
13th Apr 2022, 8:49 AM
Yones Mussa
0
Sry question is not understood by me.. Can you add any sample input and expected output?
13th Apr 2022, 8:52 AM
Jayakrishna 🇮🇳
0
Jayakrishna🇮🇳 str1 = "3/4" int = 5; are the input and the "3/20" is the output
13th Apr 2022, 8:55 AM
Yones Mussa
0
what's your idea here? How 3/20 came? 3/(4*5)?
13th Apr 2022, 9:30 AM
Jayakrishna 🇮🇳
0
Yes
13th Apr 2022, 6:36 PM
Yones Mussa
0
#include<iostream> using namespace std; int main() { std::string str1 = "3/4"; int amout_serving = 5; // get substring after / by find() method and substr method as int x = str1.find('/'); // gets '/' position //next get after / substring ie 4 , and convert it into int by stoi() then multiply by amount_serving int y = amout_serving * stoi(str1.substr(x+1)); // 5*4 => 20 // add this y to "3/" substring string result = str1.substr(0,x+1) + to_string(y); cout<< result; } //Yones Mussa hope it helps....
13th Apr 2022, 7:48 PM
Jayakrishna 🇮🇳
0
Jayakrishna🇮🇳 i appracite your answer but what if i have something like “7-1/3” as a string and 2 as integer which the output that i am looking for is 3/11. Im look for a way that basically solve both statements at the same time. Not hardcode it.
13th Apr 2022, 11:14 PM
Yones Mussa
0
Yones Mussa Can you tell me how 7-1/3 *2 = 3/11.? You did not tell it in general. I thought only one case.. According to 3/4 * 5 = 3/20 But in general maths (3/4) *5= 15/4 And 7 - 1/3 = (21-1) /3 =(20/3) *2=> 40/3 If you want to operate arithmatics why don't take input as double type input numbers? By using string, you need hardcode it as required format.. You can try your own way, with the methods I mentioned in program. Give it a try!!... Hope it helps..
14th Apr 2022, 8:42 AM
Jayakrishna 🇮🇳
0
Jayakrishna🇮🇳 it does help. I manged to get a program that take a double like 2.5 to 1 -1/4 but now it seems impossible to convert the the string of “2-1/2 “ to 2.5 or “3/4” to .75
14th Apr 2022, 9:25 AM
Yones Mussa
0
Yones Mussa for single operation , you can do this way but for compound statement of multiple operands , you to find an algarithm which works like a compiler, which performs all operations... https://code.sololearn.com/czsMSQ9rJl3G/?ref=app if it allowed you to take input of double, then that's easier to do task, instead of making it complex evaluation of string.. edit: hope this is you may looking.. https://www.geeksforgeeks.org/expression-evaluation/amp/ hope it helps...
14th Apr 2022, 11:26 AM
Jayakrishna 🇮🇳
- 1
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15th Apr 2022, 4:36 AM
Mohammad Alhamad
Mohammad Alhamad - avatar