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Mar 19th, 2008, 9:17 PM
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#1 |
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Newbie
Join Date: Mar 2008
Posts: 3
Rep Power: 0
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Help plz
<script> /*two dimensional arrays*/
var a=[];
var ctr;
var Maths=new Array(5);
var English=new Array(5);
var Total=(Maths[ctr]+English[ctr]);
for(ctr=0; ctr<5; ctr++)
{
a[ctr]="Hello";
Maths[ctr]=0;
English[ctr]=0;
Total[ctr]=0;
}
for(ctr=0; ctr<5; ctr++)
{
a[ctr]=prompt("Enter Name");
Maths[ctr]=prompt("Enter Math Grade");
English[ctr]=prompt("Enter English Grade");
}
document.write("<TABLE Border=10 ALIGN=center>");
document.write("<TR>");
document.write("<TH>Name</TH>");
document.write("<TH>Maths Marks</TH>");
document.write("<TH>English Marks</TH>");
document.write("<TH>Total</TH>");
document.write("<TH>Average</TH>");
document.write("</TR>");
for(ctr=0; ctr<5; ctr++)
{
document.write("<TR>");
document.write("<TD>" + a[ctr] + "</TD>");
document.write("<TD>" + Maths[ctr] + "</TD>");
document.write("<TD>" + English[ctr] + "</TD>");
document.write("<TD>" + (Maths[ctr] + English[ctr]) + "</TD>");
document.write("<TD>" + (Maths[ctr] + English[ctr])/2 + "</TD>");
document.write("</TR>");
}
document.write("</TABLE>");
</script>im trying to add Maths and English to create a total .. and also to find the average of Maths and English .. obviously im doing something wrong but i dont rly remember how to do this.. this is also my first time working with arrays |
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Mar 19th, 2008, 11:16 PM
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#2 |
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Hobbyist Programmer
Join Date: Sep 2007
Location: Sydney - Australia
Posts: 137
Rep Power: 1
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Re: Help plz
Alright, what you are doing is adding two strings together. So, 45 + 45 = 4545, you need 45 + 45 = 90. This is what you have to to.
<script> /*two dimensional arrays*/
var a=[];
var ctr;
var Maths=new Array(5);
var English=new Array(5);
var Total=(Maths[ctr]+English[ctr]);
for(ctr=0; ctr<5; ctr++)
{
a[ctr]="Hello";
Maths[ctr]=0;
English[ctr]=0;
Total[ctr]=0;
}
for(ctr=0; ctr<5; ctr++)
{
a[ctr]=prompt("Enter Name");
Maths[ctr]=prompt("Enter Math Grade");
English[ctr]=prompt("Enter English Grade");
}
document.write("<TABLE Border=10 ALIGN=center>");
document.write("<TR>");
document.write("<TH>Name</TH>");
document.write("<TH>Maths Marks</TH>");
document.write("<TH>English Marks</TH>");
document.write("<TH>Total</TH>");
document.write("<TH>Average</TH>");
document.write("</TR>");
for(ctr=0; ctr<5; ctr++)
{
document.write("<TR>");
document.write("<TD>" + a[ctr] + "</TD>");
document.write("<TD>" + Maths[ctr] + "</TD>");
document.write("<TD>" + English[ctr] + "</TD>");
// This is the new code here.
document.write("<TD>" + (Number(Maths[ctr]) + Number(English[ctr])) + "</TD>");
document.write("<TD>" + (Maths[ctr] + English[ctr])/2 + "</TD>");
document.write("</TR>");
}
document.write("</TABLE>");
</script>
__________________
SYNTAX ERROR ... |
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Mar 20th, 2008, 7:31 AM
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#3 |
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Newbie
Join Date: Mar 2008
Posts: 3
Rep Power: 0
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Re: Help plz
thanks a lot man it works
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