Compilare: main.cpp: In function 'int main()': main.cpp:8:15: warning: unused variable 'nr' [-Wunused-variable] int n,s=0,nr=0,i,m; ^~ main.cpp:8:20: warning: variable 'i' set but not used [-Wunused-but-set-variable] int n,s=0,nr=0,i,m; ^ main.cpp:8:22: warning: unused variable 'm' [-Wunused-variable] int n,s=0,nr=0,i,m; ^ main.cpp:9:33: warning: unused variable 'sep1' [-Wunused-variable] char a[100000],sep[]="xyzt",sep1[]="+-"; ^~~~ main.cpp:10:14: warning: unused variable 'r' [-Wunused-variable] char *p,*r; ^