In c$++$ programming, help me make a lexical analyzer of a toy compiler that can turn the following sample input:

int x;

real y;

x $=5$;

y $=$ x $*3+2\mathrm{.}1$;

if $($x $<mtext></mtext><mn>1</mn><mi>)</mi>$ then x $=1$; else x $=2$;

while $($x $<mtext></mtext><mn>5</mn><mi>)</mi><mtext></mtext><mi>\{</mi>$

x $=$ x $+1$;

$\}$

x $=10$;

Into the following sample output:

MOVI $5,,$x

MULTI x$,3,$t$1$

CONVR t$1,,$t$2$

ADDR t$2,2\mathrm{.}1,$t$3$

MOVR t$3,,$y

LTI x$,1,$t$4$

JMPF t$4,,10$

MOVI $1,,$x

JMP $,,11$

MOVI $2,,$x

LTI x$,5,$t$5$

JMPF t$5,,16$

ADDI x$,1,$t$6$

MOVI t$6,,$x

JMP $,,11$

MOVI $10,,$x

In the image is the information that my teacher gave me$,$ however, I only need to complete the lexical analyzer section of this toy compiler: