Compilare: main.cpp: In function 'int main()': main.cpp:21:24: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 21 | if(strlen(s[j])>max){ | ~~~~~~~~~~~~^~~~ main.cpp:25:24: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 25 | if(strlen(s[j])==max && strcmp(s[c],s[j])==1){ | ~~~~~~~~~~~~^~~~~ main.cpp:36:38: warning: NULL used in arithmetic [-Wpointer-arith] 36 | for(int l=0;s[k][l]!=NULL;l++){ | ^~~~ main.cpp:37:42: warning: NULL used in arithmetic [-Wpointer-arith] 37 | for(int m=0;s[j][m]!=NULL;m++){ | ^~~~