butterfly pattern in c code example

Example: complex pattern in c

#include /* * nos = Num. of spaces required in the triangle. * i   = Counter for the num. of characters to print in each row * skip= A flag for check whether to *       skip a character in a row. * */int triangle(int nos, int i, int skip) { char prnt = '*'; int s, j; for (s = nos; s >= 1; s--) {  printf("  "); } for (j = 1; j <= i; j++) { if (skip != 0) { if (i == 9 && j == 1) {   continue; } }if (i == 1 || i == 9) { printf("%2c", prnt);}else if (j == 1 || j == i) { printf("%2c", prnt); } else { printf("  ");}  }return 0; }int main() {int i, nos = 0, nosp = -1, nbsp = -1;for (i = 9; i >= 1; (i = i - 2)) {  triangle(nos, i, 0);  triangle(nosp, i, 1);  triangle(nbsp, i, 1);  printf("\n");  nos++;  nosp = nosp + 2;  nbsp = nbsp + 2; } nos = 3, nosp = 5, nbsp = 5; for (i = 3; i <= 9; (i = i + 2)) {  triangle(nos, i, 0);  triangle(nosp, i, 1);  triangle(nbsp, i, 1);  printf("\n");  nos--;  nosp = nosp - 2;  nbsp = nbsp - 2; } return 0;}