Compilare: main.cpp: In function 'int main()': main.cpp:33:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<strlen(v)-1; i++) ~^~~~~~~~~~~~ main.cpp:37:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1; i<strlen(v); i++) ~^~~~~~~~~~ main.cpp:42:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<strlen(v); i++) ~^~~~~~~~~~ main.cpp:29:48: warning: unused variable 'ry' [-Wunused-variable] int c,s=0,b=0,i,k=0,sx=0,sy=0,sz=0,st=0,rx,ry,rz,rt; ^~ main.cpp:29:51: warning: unused variable 'rz' [-Wunused-variable] int c,s=0,b=0,i,k=0,sx=0,sy=0,sz=0,st=0,rx,ry,rz,rt; ^~ main.cpp:29:54: warning: unused variable 'rt' [-Wunused-variable] int c,s=0,b=0,i,k=0,sx=0,sy=0,sz=0,st=0,rx,ry,rz,rt; ^~ main.cpp:30:10: warning: unused variable 'x' [-Wunused-variable] char x,a[4],v[100000],semn[]="+-",*p,lit[]="xyzt",w[100000],nr[]="0123456789"; ^ main.cpp:30:65: warning: unused variable 'nr' [-Wunused-variable] char x,a[4],v[100000],semn[]="+-",*p,lit[]="xyzt",w[100000],nr[]="0123456789"; ^~