Compilare: main.cpp: In function 'int main()': main.cpp:35:40: warning: NULL used in arithmetic [-Wpointer-arith] 35 | for(int jj=0;s[i][jj]!=NULL;jj++) | ^~~~ main.cpp:37:27: warning: statement has no effect [-Wunused-value] 37 | strchr(s[j],s[i][jj]); | ~~~~~~^~~~~~~~~~~~~~~ main.cpp:40:22: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 40 | if(kk==strlen(s[i])-1) | ~~^~~~~~~~~~~~~~~~ main.cpp:21:23: warning: 'char* strcpy(char*, const char*)' writing between 2 and 5000000 bytes into a region of size 1 [-Wstringop-overflow=] 21 | strcpy(mi,s[i]); | ~~~~~~^~~~~~~~~ main.cpp:10:21: note: at offset 0 to object 'mi' with size 1 declared here 10 | char s[1000][5000], mi[1]= {0}; | ^~ main.cpp:21:23: warning: 'void* __builtin_memcpy(void*, const void*, long unsigned int)' forming offset 1 is out of the bounds [0, 1] of object 'mi' with type 'char [1]' [-Warray-bounds] 21 | strcpy(mi,s[i]); | ~~~~~~^~~~~~~~~ main.cpp:10:21: note: 'mi' declared here 10 | char s[1000][5000], mi[1]= {0}; | ^~