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ManOnMoon
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Joined: 17 Mar 2009
Posts: 26
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 Posted: Wed Feb 03, 2010 1:13 pm Post subject: C Help |
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So I am currently taking CSC101 at my university as a required course for EE. However, some parts have really really confused me since I don't know how to approach problems. I was wondering if anyone here could help me with my current lab. I just need to be steered in the right direction as to how I should approach it.
| Code: | Laboratory Exercises
In this lab you will write a program, times which generates multiplication tables up to a value given
by the user. I will only give you the specification for the program’s behavior, not tell you how to
design the program.
In the three parts of this lab, you will generate the program in three stages:
1. Design
Since I said above I wouldn’t tell you how to write the program, the first thing you have to do
is to design it to meet the requirements below.
Your program generate an integer multiplication table from 1 to max where the integer max
is read from the user. The program should read max, then show the product of all pairs of
integers from 1 to max, lined up in neat columns, as shown in the following example:
% times
Enter the Maximum: 10
1 2 3 4 5 6 7 8 9 10
2 4 6 8 10 12 14 16 18 20
3 6 9 12 15 18 21 24 27 30
4 8 12 16 20 24 28 32 36 40
5 10 15 20 25 30 35 40 45 50
6 12 18 24 30 36 42 48 54 60
7 14 21 28 35 42 49 56 63 70
8 16 24 32 40 48 56 64 72 80
9 18 27 36 45 54 63 72 81 90
10 20 30 40 50 60 70 80 90 100 |
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Slugsnack
Grandmaster Cheater Supreme
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Joined: 24 Jan 2007
Posts: 1857
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| Posted: Wed Feb 03, 2010 5:39 pm Post subject: |
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| Code: | #include <stdio.h>
int main() {
int i, k = 1;
printf("Enter the maximum: ");
scanf("%d", &i);
for( int j = 1; k <= i; j++ ) {
printf("%d ", j*k);
if( ( j % i ) == 0 ) {
k++;
j = 0;
printf("\n");
}
}
scanf("%d", &i);
return 0;
} |
untested
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Flyte
Peanuts!!!!
 Reputation: 6
Joined: 19 Apr 2006
Posts: 1887
Location: Canada
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| Posted: Thu Feb 04, 2010 2:53 am Post subject: |
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| Slugsnack wrote: | | untested |
You know, they have these amazing new things called "nested for loops". Astounding!
ManOnMoon: This is what you are looking for. Chances are your school doesn't have a C99 compliant compiler, so you may have to move the loop variables to the start of main.
| Code: | #include <stdio.h>
int main()
{
int max;
printf("Enter the Maximum: ");
scanf("%d", &max);
for(int i = 1; i <= max; ++i) {
for(int j = 1; j <= max; ++j) {
printf("%3d ", i * j);
}
printf("\n");
}
return 0;
} |
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ManOnMoon
Cheater
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Joined: 17 Mar 2009
Posts: 26
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| Posted: Fri Feb 05, 2010 2:29 am Post subject: |
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| Thanks a lot guys I will probably look into it tomorow since I have been putting this off. My question is why it works for some reason it just does not make sense to me.
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