I got it to print the smallest pair for the input number.
but i need also to do this proccess for every number smaller then the input to 1.
Code:#include <stdio.h> int main(){ int num; int index,tndex,kndex,jndex; int flag_1,flag_2,same_num; int sum; int smallest,smallest_ever,smallest_ever_2; sum=0; same_num=-1; smallest=-1; smallest_ever=2147483647; smallest_ever_2=2147483647; printf("enter number\n"); scanf("%d",&num); for(index=1;index<num;index++){ //start for main number flag_1=0; flag_2=0; tndex=index; kndex=num-tndex; sum=0; for(jndex=1;jndex<tndex;jndex++){//start abbondence check for first num (tndex) if (tndex%jndex==0){ sum=sum+jndex; } if (tndex<sum){ flag_1=1; } }//end abbondence check for first num sum=0; for(jndex=1;jndex<kndex;jndex++){//start abbondence check for second num (kndex) if (kndex%jndex==0){ sum=sum+jndex; } if (kndex<sum){ flag_2=1; } }//end abbondence check for first num if ((flag_2==1)&&(flag_1==1)){ //start flag check if (kndex>=tndex){ smallest=tndex; if ((smallest<smallest_ever)&&(smallest>1)){ smallest_ever=smallest; smallest_ever_2=kndex; } } else { smallest=kndex; if ((smallest<smallest_ever)&&(smallest>1)){ smallest_ever=smallest; smallest_ever_2=tndex; } } if(same_num!=smallest_ever){ printf("%d %d",smallest_ever,smallest_ever_2); } same_num=smallest_ever; }//end flag check }//end for main number return 0; }//end main


