don't understand Japanese, can only be amended from the grammar errors, for reference:

 # include 
# include 
# include 

Int main (void) 
{
Int retry=0; 
Int card;//here have defined the card 
srand(time(NULL)); 
Card=rand () % + 1;//int card=rand () % + 1; 
Printf (" card=% d \ n ", card); 

If (card & gt; 21) {
The switch (card) {
If (card==1) {//never satisfied the condition here 
Printf (" あ な た の wins ち \ n "); 
break; 
} 
The else {
Printf (" あ な た の negative け \ n "); 
break; 
} 
} 
} 
Printf (" も う once カ ー ド を lead く か confirmed \ n "); 
Printf (" retry を し into force て く だ さ い, \ n "); 

The scanf (" % d ", & amp; Retry);//scanf_s (" % d ", & amp; Retry); 
The switch (retry) {
If (retry==0) {
break; 
} 
} while (retry);//while (card);//? Here is the infinite loop 

return 0; 
}