Thread: Help with grading a asterisk triangle corresponding to different grade ranges.

Help needed!
so far:
insert

Code:

#include <stdio.h>
#include <stdlib.h>


int main(void) {
    int i, j, range;
    int begin = 0;
    for (i = 1; i <= 10; ++i)
    {
        range = begin + 9;
        printf("%d -- %d : ", begin, range);
        for (j = 1; j <= i; ++j)
            printf("*");
            printf("\n");
    }
    return EXIT_SUCCESS;
}

Output right now:

0 -- 9 : *
0 -- 9 : **
0 -- 9 : ***
0 -- 9 : ****
0 -- 9 : *****
0 -- 9 : ******
0 -- 9 : *******
0 -- 9 : ********
0 -- 9 : *********
0 -- 9 : **********




Needed output:

0 -- 9 : *
10 -- 19 : **
20 -- 29 : ***
30 -- 39 : ****
40 -- 49 : *****
50 -- 59 : ******
60 -- 69 : *******
70 -- 79 : ********
80 -- 89 : *********
90 -- 99 : **********


Any suggestions on how to get the range to change each time? Thanks, Liz

You need to increment begin, right now it's always 0.

insert

Code:

#include <stdio.h>
#include <stdlib.h>


int main(void) {
    int i, j;
    int begin = 0;
    int range = 0;
    for (i = 1; i <= 10; ++i)
    {
        begin = range;
        range = begin + 10;
        printf("%d -- %d : ", begin, range);
        for (j = 1; j <= i; ++j)
            printf("*");
            printf("\n");
    }
    return EXIT_SUCCESS;
}

NOW OUTPUT:

0 -- 10 : *
10 -- 20 : **
20 -- 30 : ***
30 -- 40 : ****
40 -- 50 : *****
50 -- 60 : ******
60 -- 70 : *******
70 -- 80 : ********
80 -- 90 : *********
90 -- 100 : **********

Alright, so I incremented "begin" but I need to the range to start from 0 -- 9; 10 -- 19... etc. I can't quite figure out how to get it to that range....

Go back to range = begin + 9. Then you need to increment begin by 10 in each loop, not set it to the last value of range.

If you use a %2d format for printf(), the numbers (begin and begin+9) of 0 and 9, will line up properly.