Question: a) Will the above code work properly if int val on Line 19 is changed to unsigned char val? b) What is the role of

a) Will the above code work properly if int val on

a) Will the above code work properly if int val on Line 19 is changed to unsigned char val?

b) What is the role of volatile on Line 6?

1: #include 3: #de fine NR ITEMS 10 5: #de fine 10REGS BASE 0x0000 (unsigned char volatile ) (IOREGS_BASE off) IO8 (2) I08 (0) 6: #de fine 108 (off) 7: #de fine PORTX 8: #de fine DDRX 10: I Interfacing with 7-segment Display 11 void display output (int val) 12: 13: 14: 15: 16: 17: void main (void) 18: 19: 20: 21: unsigned char decoder [NR-ITEMS] { = 0x7E, 0x30, 0x6D, 0x79, 0x33, 0x5B, 0x5F, 0x70, 0x7F, 0x7B PORTX decoder [val); long i; int val: DDRX 0xff // Output mode val = 0; 23: 24 25: 26: 27: 28: 29: while (1) display_output (val); val = (val + 1) % NR ITEMS ; for (i=0; i

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