foo.c: In function 'main':
foo.c:6:11: warning: too many arguments for format [-Wformat-extra-args]
     scanf("%d",&a,a<=100);
           ^~~~
foo.c:7:8: warning: too many arguments for format [-Wformat-extra-args]
  scanf("%d",&b,b<=a);
        ^~~~
foo.c:6:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&a,a<=100);
     ^~~~~~~~~~~~~~~~~~~~~
foo.c:7:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&b,b<=a);
  ^~~~~~~~~~~~~~~~~~~
foo.c:6:5: warning: 'a' is used uninitialized in this function [-Wuninitialized]
     scanf("%d",&a,a<=100);
     ^~~~~~~~~~~~~~~~~~~~~

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