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#include <stdio.h>
 
int main(void) {
	// your code goes here
	char card_name[3];
	scanf("%2s", card_name);
		int val = 0;
	switch(card_name[0]){	
	case 'K':
	case 'Q':
	case 'J':
		val = 10;
		break;
	case 'A':
		val = 11;
		break;
	default:
		val = atoi(card_name);
	}	
	return 0;
}
 

prog.c: In function ‘main’:
prog.c:18:9: warning: implicit declaration of function ‘atoi’ [-Wimplicit-function-declaration]
   val = atoi(card_name);
         ^~~~
prog.c:20:1: error: expected declaration or statement at end of input
 }
 ^
prog.c:7:7: warning: variable ‘val’ set but not used [-Wunused-but-set-variable]
   int val = 0;
       ^~~

Standard output is empty