It's in C language please explain the output of the below code.

Question

long fu(int); 
char vect[]={1,2,3,4,5}; 
void main(){ 
int i=1; 
i=fu(++i)+ ++vect[++i]+ ++i+fu(i++); 
printf("%d",i); 
} 
long fu(int x){ 
return x*3; 
}

Answer 1

how