Compilare: main.cpp: In function 'int main()': main.cpp:15:18: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 15 | for(i=0;i<strlen(c);i++){ | ~^~~~~~~~~~ main.cpp:12:18: warning: unused variable 'n' [-Wunused-variable] 12 | int p,i,p1=0,n=1,m=1,ok=0,nr=0,j; | ^ main.cpp:12:22: warning: unused variable 'm' [-Wunused-variable] 12 | int p,i,p1=0,n=1,m=1,ok=0,nr=0,j; | ^ main.cpp:12:26: warning: unused variable 'ok' [-Wunused-variable] 12 | int p,i,p1=0,n=1,m=1,ok=0,nr=0,j; | ^~ main.cpp:12:31: warning: unused variable 'nr' [-Wunused-variable] 12 | int p,i,p1=0,n=1,m=1,ok=0,nr=0,j; | ^~ main.cpp:12:36: warning: unused variable 'j' [-Wunused-variable] 12 | int p,i,p1=0,n=1,m=1,ok=0,nr=0,j; | ^