prog.c: In function 'main':
prog.c:11:9: error: format '%d' expects argument of type 'int *', but argument 2 has type 'float *' [-Werror=format=]
scanf("%d",&number_passes);
^
prog.c:12:10: error: format '%d' expects argument of type 'int *', but argument 2 has type 'float *' [-Werror=format=]
scanf ("%d",&number_failures);
^
cc1: all warnings being treated as errors