C$++4$ Task D

Read a csv file containing arithmetic expressions and their corresponding answers, randomly display the

questions and answer them, stop if a correct rate of $60\%$ or higher is reached. Report the correct rate.

Here is a sample run:

$(1)$ what is $1+\frac{4}{2}?3$

true

$(2)$ what is $3+2\%2?3$

true

$(3)$ what ia $1+3\%2?2$

true

$(4)$ what ia $\frac{1\mathrm{.}0}{2}**3?1\mathrm{.}5$

true

$(5)$ what is $(3+2)\%2?1$

true

$(6)$ what ia $\frac{1}{2\mathrm{.}0}**3?1\mathrm{.}5$

true

At least $60\%$ ia correct. Stop.

Here is another sample run:

$(1)$ what ia $1+\frac{4}{2}?1$

false

$(2)$ what is $3+2\%2?$

false

$(3)$ what is $1+3z_2?$

true

$(4)$ what is $\frac{1\mathrm{.}0}{2}**3?1\mathrm{.}5$

true

$(5)$ what is $(3+2)x2?1$

true

$(6)$ what is $\frac{1}{2\mathrm{.}0}**3?1\mathrm{.}5$

true

$(7)$ what is $1+4\%2?0$

false

$(8)$ what is $\frac{1}{2}**3?0$

true

$(9)$ what is $\frac{1}{2}**3\mathrm{.}0?1\mathrm{.}5$

false

percentage correct: $55\mathrm{.}5556\%$