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Showing Binary Equivalent of an Integer

main() { int n; char ch; while(1) { clrscr(); printf(" Enter an integer to see its Binary Equivalent"); printf(" Enter "); scanf("%d",&n); showbits(n); printf(" continue ? "); ch=getch(); if(ch==27) break; } } showbits(int n) { int i,bit,mask,count=0; printf(" "); for(i=15;i>=0;i--) { mask=1<<i; bit=n & mask; if(bit==mask) printf("1"); else printf("0"); count++; if(count%4==0) printf(" "); } }