Seven segment display using at89c51 microcontroller

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Seven segment display using at89c51 microcontroller.
port P2 is used for connection as per fig given below.

#include

sbit sw=P1^0;


void delay(unsigned int t)

{

while(t--);

}

void main()

{

int i;

unsigned char ar[10]= {0x3F,0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D, 0x07, 0x7F, 0x6F};

P2=0x00;

while(1)


{

while(sw==1);

while(sw==0);

for(i=0; i<10;i++) { P2=ar[i]; delay(500000); } } } If any query ask me in comment.