What's the problem?Code:#include <stdio.h> int main(void) { int iVar; //line 1 iVar = 20; //line 2 ++iVar; //line 3 printf( "\niVar : %d\n", iVar ); // line 4 iVar--; // line 5 printf( "\niVar : %d\n", iVar ); // line 6 iVar + ++iVar--; //line 7 printf( "\niVar : %d\n", iVar ); // line 8 ++( iVar + iVar ); // line 9 printf( "\niVar : %d\n", iVar ); // line 10 return 0; // line 11 }