Compilare: main.cpp: In function 'int main()': main.cpp:21:8: warning: 'char* strncpy(char*, const char*, size_t)' accessing between 0 and 200000 bytes at offsets [0, 200000] and 0 may overlap up to 200000 bytes at offset [0, 199999] [-Wrestrict] 21 | strncpy(a+n,a,n); | ~~~~~~~^~~~~~~~~