now it is outputting $0$s how do I fix this int main$()\{$

int sets $=0$;

float po$,$ hc$,$ sg $=0$;

float lowestSpec;

int cnter $=0$;

int counter $=0$;

float flowRate;

printf$("$Enter the number of limestones to compare:"$)$;

scanf$("\%$d$",$ &sets$)$;

float multiples$[$sets$][3]$;

float newArray$[$sets$][4]$;

lowestSpec$=10000$;

for $($int i $=0$; i $<$ sets; i$++)\{$

counter$++$;

cnter$++$;

printf$("$Enter the Information, $\%$d :$",$ cnter$)$;

scanf$("\%$d$",$ &multiples$[$i$][0])$;

scanf$("\%$d$",$ &multiples$[$i$][1])$;

scanf$("\%$d$",$ &multiples$[$i$][2])$;

$\}$

for $($int i $=0$; i $<$ sets; i$++)\{$

if $($multiples$[$i$][2]<$ lowestSpec$)\{$

lowestSpec $=$ multiples$[$i$][2]$;

$\}$

$\}$;

printf$("$The lowest specific gravity is$,\%$f

$",$ lowestSpec$)$;

for $($int i $=0$; i $<$ sets; i$++)\{$

for $($int j $=0$; j $<3$; j$++)\{$

newArray$[$i$][$j$]=$ multiples$[$i$][$j$]$;

$\}$

$\}$

for $($int i $=0$; i $<$ sets; i$++)\{$

flowRate $=$ newArray$[$i$][1]*(900)$;

newArray$[$i$][3]=$ flowRate;

$\}$;

int counterThree$=0$;

for $($int i $=0$; i $<$ sets; i$++)\{$

printf$("$Flow velocity:

$")$;

counterThree$++$;

printf$("$Limestone $\%$d: $\%$f cm$^3/$s$",$ counterThree, newArray$[$i$][3])$;

$\}$

$\}$