Compilare: main.cpp: In function 'int main()': main.cpp:24:18: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(j=0;j<strlen(c);j++) | ~^~~~~~~~~~ main.cpp:46:55: warning: NULL used in arithmetic [-Wpointer-arith] 46 | while(c3[j]!=' ' && c3[j]!='\n' && c3[j]!=NULL) | ^~~~ main.cpp:57:26: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(j=0;j<strlen(p);j++) | ~^~~~~~~~~~ main.cpp:39:13: warning: unused variable 'k' [-Wunused-variable] 39 | int k; | ^