#include<stdio.h> void main() { int a[10] = { 2,6,3,1,7,5,8,10 }; int b[10]; int k = -1; //printf("hhjjhff"); int i = 0; int j = 0; int target = 11; for (; i < 9; i++) { for (j = i + 1; j < 9; j++) { if (a[i] + a[j] == 11) { k++; b[k] = i; k++; b[k] = j; } } } int n = 0; for (n = 0; n < k + 1; n++) { printf("%d", b[n]); } }