const int const1 = 1, const2 = -100;
const char const3 = '_'; 
int change1; 
char change3; 
int gets1(int var1,int var2){ 
change1 = var1 + var2; 
return (change1); 
} 
void main(){ 
printf("Hello World"); 
printf(gets1(10, 20)); 
}