Borderou de evaluare (job #769449)

Compilare: main.cpp: In function 'int main()': main.cpp:13:20: warning: converting to non-pointer type 'char' from NULL [-Wconversion-null] 13 | s[strlen(s)-2]=NULL; | ^~~~ main.cpp:14:18: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'unsigned int'} [-Wsign-compare] 14 | for(int i=0;i<strlen(s);i++) | ~^~~~~~~~~~ main.cpp:10:15: warning: unused variable 'n' [-Wunused-variable] 10 | { int k,r=0,n=0,ok=0; | ^