Compiler output
prog.c: In function ‘main’:
prog.c:5:1: warning: implicit declaration of function ‘scanf’ [-Wimplicit-function-declaration]
prog.c:5:1: warning: incompatible implicit declaration of built-in function ‘scanf’ [enabled by default]
prog.c:5:16: error: ‘n’ undeclared (first use in this function)
prog.c:5:16: note: each undeclared identifier is reported only once for each function it appears in
prog.c:5:19: error: ‘m’ undeclared (first use in this function)
prog.c:6:1: warning: implicit declaration of function ‘printf’ [-Wimplicit-function-declaration]
prog.c:6:1: warning: incompatible implicit declaration of built-in function ‘printf’ [enabled by default]
prog.c:4:7: warning: unused variable ‘b’ [-Wunused-variable]
prog.c:4:5: warning: unused variable ‘a’ [-Wunused-variable]
