code not working as it should..

Or learn to use a debugger...

i traced it many times with a debugger
my logic is like this
for index=1 add to it the next numbers till you get you input number.
1+2+3

then you keep the last number which was inputed
and subtract it from the sum till you get 0
and then keep the smallest
and with a loop print the numbers from the smallest till the biggest
and adding them together till i get the sum-1 before .

how to do this any simpler?

my problem is in the last for
it prints also the next unwanted number
21=10+11+12

i dont khow how to block this 12

Quote:

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Originally Posted by transgalactic2

my problem is in the last for
it prints also the next unwanted number
21=10+11+12

i dont khow how to block this 12

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Quote:

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Originally Posted by tabstop

Maybe you should set count_up equal to kndex, instead of 0, since at that point in the program you've already dealt with kndex.

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I realized I phrased this as a suggestion, but still. Pay attention to your surroundings, and to what your variables are actually doing.

I solved it but now i need to post a massage where
there is no way to construct the input number from sequence numbers
it puts the massage "no way" in every case.

Code:

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#include <stdio.h>

int main(){

  //start of option1 code
int index,tndex,kndex,jndex;
int num,count,count_up;
count=0;
printf("Enter a natural number\n");
scanf("&#37;d",&num);

 for(index=1;index<num;index++){//start for1
    count=0;
    for(tndex=index;count<num;tndex++){//start for2

    count=count+tndex;

    }//end for2
    count_up=count;

    tndex--;
    if (count==num){//start if equal
        for(kndex=tndex;count>0;kndex--){//start inner for

          count=count-kndex;

        }//end inner for
        kndex++;
        printf("%d=%d",num,kndex);
        count_up=0;
        kndex++;
        for(jndex=kndex;count_up<num;jndex=jndex+1){//start for

            count_up=count_up+jndex;

        if (count_up<=num){
                    printf("+%d",jndex);
                    count=1;                    //when we can construct i put 1 into the counter so the last if will not work
        }
        }//end for
        printf("\n");
    }//end if equal

  }//end for1
  if (count!=1){
      printf("no way");            //here is the massage
  }
 //end of option1 code
 return 0;
}//end main

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You try to use count as a flag to see if a print succeeded -- except of course you're already using the variable count for something else, so it gets overwritten. You need a dedicated variable to be your "count succeeded" flag.

thanks it works