prog.c:3: warning: return type defaults to ‘int’
prog.c: In function ‘main’:
prog.c:7: warning: implicit declaration of function ‘printf’
prog.c:7: warning: incompatible implicit declaration of built-in function ‘printf’
prog.c:7: warning: format ‘%x’ expects type ‘unsigned int’, but argument 2 has type ‘int *’
prog.c:8: warning: format ‘%x’ expects type ‘unsigned int’, but argument 2 has type ‘int *’
prog.c:9: warning: format ‘%x’ expects type ‘unsigned int’, but argument 2 has type ‘int (*)[2]’
prog.c:11: warning: control reaches end of non-void function