int转double 详解

 

 

用例子说话

 

double db;

int it=9,it2=4;

 

db=9/4;   //  result 2.00

db=it/it2; //result 2.00

db=(double)(it/it2);   //result 2.00

db=(double)it/it2;  //result 2.25

db=(double)it/(double)it2;  //result 2.25