Task D. Calc3: Squares.

Write an even better calculator program calc3.cpp that can understand squared numbers. We are going to use a simplified notation X^ to mean X². For example, 10^ + 7 - 51^ should mean 10² + 7 51².

Example:

When reading input file formulas.txt

5^; 1000 + 6^ - 5^ + 1;

the program should report:

$ ./calc3 < formulas.txt 25 1012

example 2)

On input: 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1; 1^ + 1^ + 1^ + 1^ + 1^ + 1^ + 1^ + 1^ + 1^ + 1^ + 1^ + 2^;

Expected:

16

15

A hint:

To take into account ^, don't add or subtract new numbers right away after reading them. Instead, remember the number, read the next operator and if it is a ^, square the remembered number, then add or subtract it.

ALSO DONT HAVE THE CODE READ IN ANY FILE PLEASE! THE SYSTEM WILL INOUT NUMBERS ON ITS OWN.

I dont need a code like this one that was given before when I asked the uestion and that I asked to be corrected and wasn't, don't read in a file please>

#include #include using namespace std; int main(int argc, char** argv) {

char old_opr='+',new_opr; int number,ans=0; ifstream file; file.open(argv[1]); while(file>>number) { file>>new_opr; if(new_opr=='^') { number*=number; file>>new_opr; } if(old_opr=='+') { ans+=number; } else if(old_opr=='-') { ans-=number; } if(new_opr==';') { cout<

/* output

formula.txt file

5^;

1000+6^-5^+1;

after running

./a.out formula.txt

25 1012

*/