I modified your program as below. Every time, value of ret = 0. scanf is repeatedly failing cos there is some junk in the input stream Hence it prints junk values
#include <stdio.h> void main() { while(1) { int opt, ret; ret=scanf("%d",&opt); printf("opt is %d\n",opt); printf("ret is %d\n",ret); } } Regards, Raghu On Tue, Sep 13, 2011 at 3:23 AM, Avinash Dharan <avinashdha...@gmail.com>wrote: > #include <stdio.h> > void main() > { > while(1) > { > int opt; > scanf("%d",&opt); > printf("%d\n",opt); > } > } > > when i execute this program, if i give a character instead of an integer, > it goes into an infinite loop. why is it so? > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To post to this group, send email to algogeeks@googlegroups.com. > To unsubscribe from this group, send email to > algogeeks+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/algogeeks?hl=en. > -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com. To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.