Software Applications Programming Errors and solutions.

Code to generate the pyramid structure using c++ main() { int i; int j,n,uppr,lowr, arry[] = {1,2,3,4,5,6,7,8,9}; /*Take Input */ do { cout << "Enter an odd number(0-9):"; cin >> n; if(n < 0 || n > 9 || ((n % 2) == 0)) cerr << "Error" << endl; }while(n < 0 || n > 9 || ((n % 2) == 0)); /*Generate the pyramid structure */ for(i = 0; i < n; i++) { for(j = 0; j < ((i < (n-i-1)?i:(n-i-1))); j++) cout << " "; lowr = (i < (n-i-1)) ? i : (n-i-1); uppr = (i < (n-i-1)) ? (n-i-1) : i; for( j = lowr; j <= uppr; j++) cout << arry[j]; cout << endl; } return 0; } To execute something before main function you can try below code fun() { clrscr(); printf("\nIn the fun.........."); } #pragma startup fun int main() { printf("\nIn the main()"); getch(); return 0; }