shortening a super nested if with struct function c++

[yhangel]

prodref()
{
products alg, als, br, st, acre, acri, imp, mirr, mag, usp;

//Prices
alg.price.belowten=140;
alg.price.belowfifty=85;
alg.price.belowonehundred=75;
alg.price.moreonehundred=70; //aluminum gold

als.price.belowten=140;
als.price.belowfifty=85;
als.price.belowonehundred=75;
als.price.moreonehundred=70; //aluminum silver

br.price.belowten=250;
br.price.belowfifty=200;
br.price.belowonehundred=155;
br.price.moreonehundred=115; //brass

st.price.belowten=250;
st.price.belowfifty=200;
st.price.belowonehundred=155;
st.price.moreonehundred=115; //steel

acre.price.belowten=130;
acre.price.belowfifty=75;
acre.price.belowonehundred=65;
acre.price.moreonehundred=60; //engrave

acri.price.belowten=130;
acri.price.belowfifty=75;
acri.price.belowonehundred=65;
acri.price.moreonehundred=70; //imprint

imp.price.belowten=100;
imp.price.belowfifty=80;
imp.price.belowonehundred=75;
imp.price.moreonehundred=70; //imprint

mirr.price.belowten=130;
mirr.price.belowfifty=75;
mirr.price.belowonehundred=65;
mirr.price.moreonehundred=60; //mirrorized

mag.price.belowten=55;
mag.price.belowfifty=55;
mag.price.belowonehundred=50;
mag.price.moreonehundred=50; //magnet

usp.price.belowten=15;
usp.price.belowfifty=15;
usp.price.belowonehundred=10;
usp.price.moreonehundred=10; //usp
}
supernestedif()
{
if (n>0 && n<11)
{
if (qty>0)
{
if (n==1)
{
if (qty<=10)
up=alg.price.belowten;
else if (qty>10 && qty<=50)
up=alg.price.belowfifty;
else if (qty>50 && qty<=100)
up=alg.price.belowonehundred;
else
up=alg.price.moreonehundred;
}
if (n==2)
{
if (qty<=10)
up=als.price.belowten;
else if (qty>10 && qty<=50)
up=als.price.belowfifty;
else if (qty>50 && qty<=100)
up=als.price.belowonehundred;
else
up=als.price.moreonehundred;
}

is there any way too shorten this?? T_T

The scenario is i have 10 products with two category,, its the price and the quantity,, if a user input the product number and the quantity,, i need to compare it to my list before it will give the output price... my problem is,, it is too long... i want to shorten it,, if possible.

[yhangel]

another problem occurred. whenever i'm trying to cout one of the member like alg.price.belowten, it doesn't return the declared value but it returns 0.