To reverse a string program: void strreverse(char str[]) { int i,d,e,temp; for(i=0;str[i];++i); d=e=i; for(i=0;i main() { int num,d,sum=0,e; printf("\n enter the number:"); scanf("%d",&num); e=num; while(num!=0) { d=num%10; sum=sum*10+d; num/=2; } if (sum==e) printf("\n palindrome no"); else printf("\n not palindrome:"); return 0; }