prog.c: In function 'main':
prog.c:8:20: warning: conversion lacks type at end of format [-Wformat=]
scanf("(M*2+D)%3",&S);
^
prog.c:8:11: warning: too many arguments for format [-Wformat-extra-args]
scanf("(M*2+D)%3",&S);
^~~~~~~~~~~
prog.c:12:16: warning: too many arguments for format [-Wformat-extra-args]
printf("samll\n",&S);
^~~~~~~~~
prog.c:14:16: warning: too many arguments for format [-Wformat-extra-args]
printf("medium\n",&S);
^~~~~~~~~~
prog.c:16:16: warning: too many arguments for format [-Wformat-extra-args]
printf("big\n",&S);
^~~~~~~
prog.c:21:14: warning: format '%d' expects argument of type 'int', but argument 2 has type 'int *' [-Wformat=]
printf("%d",&S);
^
prog.c:22:5: warning: implicit declaration of function 'system' [-Wimplicit-function-declaration]
system("pause");
^~~~~~