foo.c: In function 'sort':
foo.c:39:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
foo.c: In function 'main':
foo.c:44:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&Num,&QuesNum);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.c:47:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&glod[i][0]);  
   ^~~~~~~~~~~~~~~~~~~~~~~
foo.c:51:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&glod[i][1]);  
   ^~~~~~~~~~~~~~~~~~~~~~~
foo.c:69:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d %d",&begin,&end,&volume);
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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