/in/foo.c: In function 'main':
/in/foo.c:9:10: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
  scanf("%d %d",n,m);
          ^
/in/foo.c:9:13: warning: format '%d' expects argument of type 'int *', but argument 3 has type 'int' [-Wformat=]
  scanf("%d %d",n,m);
             ^
/in/foo.c:10:10: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
  scanf("%d %d",x1,x2);
          ^
/in/foo.c:10:13: warning: format '%d' expects argument of type 'int *', but argument 3 has type 'int' [-Wformat=]
  scanf("%d %d",x1,x2);
             ^
/in/foo.c:11:10: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
  scanf("%d %d",y1,y2);
          ^
/in/foo.c:11:13: warning: format '%d' expects argument of type 'int *', but argument 3 has type 'int' [-Wformat=]
  scanf("%d %d",y1,y2);
             ^
/in/foo.c:9:2: warning: 'n' is used uninitialized in this function [-Wuninitialized]
  scanf("%d %d",n,m);
  ^~~~~~~~~~~~~~~~~~
/in/foo.c:9:2: warning: 'm' is used uninitialized in this function [-Wuninitialized]
/in/foo.c:10:2: warning: 'x1' is used uninitialized in this function [-Wuninitialized]
  scanf("%d %d",x1,x2);
  ^~~~~~~~~~~~~~~~~~~~
/in/foo.c:10:2: warning: 'x2' is used uninitialized in this function [-Wuninitialized]
/in/foo.c:11:2: warning: 'y1' is used uninitialized in this function [-Wuninitialized]
  scanf("%d %d",y1,y2);
  ^~~~~~~~~~~~~~~~~~~~
/in/foo.c:11:2: warning: 'y2' is used uninitialized in this function [-Wuninitialized]
/in/foo.c:26:5: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized]
     printf("%d",c*100000000);
     ^~~~~~~~~~~~~~~~~~~~~~~~