Hello everybody !

Here is my problem...I have to make a program to present the first consecutive composites numbering from 1 to .....

The first group of Consecutive composites should apart from 1 composites

The second group of Consecutive composites should apart from 3 composites

The third group of Consecutive composites should apart from 5 composites

.......................

The last group of Consecutive composites should apart from N composites (N is given).

But every group should always be the first to contain x Consecutive composites.

e.g.

Look below to imagine what i mean.

2 345 6 78 9 1011 12 13 14 15 16 17 18 19 20 21 22 2324 25 26 27 2829 30 31 32 33

34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61

62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89

90 91 92 93 94 95 9697 98 99 100 101

This is what my program should print for N=131:

First 1 consecutive composites from 4 to 4

First 3 consecutive composites from 8 to 10

First 5 consecutive composites from 24 to 28

First 7 consecutive composites from 90 to 96

First 9 consecutive composites from 140 to 148

First 11 consecutive composites from 200 to 210

First 13 consecutive composites from 114 to 126

First 15 consecutive composites from 1832 to 1846

First 17 consecutive composites from 524 to 540

.................................................. ...........

First 43 consecutive composites from 15684 to 15726

First 45 consecutive composites from 81464 to 81508

.................................................. ...........

First 127 consecutive composites from 3851460 to 3851586

First 129 consecutive composites from 5518688 to 5518816

First 131 consecutive composites from 1357202 to 1357332

I try this, I've made so many changes to work properly but nothing.

My program print consecutive composites but not the first.

My Code:

I know that i have to run the loop from the start but i can achieve it. A wrong always appear!!!Code:#include <stdio.h> #include <math.h> #define N 101 //N is given int iscomp(int); //Function that checks if a number is composite int main(void) { int i,temp_count,j=4; for(i=1;i<=N;i+=2){ //Start loop from 1 to N temp_count=0; for(;temp_count<i;j++){ //Loop until temp_count equals to i which means that i nums writen if((j%2==0)||(iscomp(j))){ //check for composites number temp_count++; //Increase temp_count if yes and go to the next loop continue;} temp_count=0; //Or zero temp_count if not } printf("First %d consecutive composites from %d %d\n",i,j-temp_count,j-1); } putchar('\n'); return 0; } int iscomp(int k){ //Function for checking if a num is composite or not int i; if(k%2==0) return 1; for(i=3;i<=sqrt(k);i++) if(k%i==0) return 1; return 0; }

Thank anyway