Eroare de compilare: user.cpp: In function ‘char peek()’: user.cpp:47:5: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (prim->urm!=NULL) ^ user.cpp:45:8: warning: unused variable ‘p’ [-Wunused-variable] TNOD *p; ^ user.cpp: In function ‘int main()’: user.cpp:64:19: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[101]’ [-Wformat=] fscanf(f,"%s",&a); ^ user.cpp:66:23: error: ‘strlen’ was not declared in this scope for (j=0; j<strlen(a); j++) ^ user.cpp: In function ‘char peek()’: user.cpp:51:1: warning: control reaches end of non-void function [-Wreturn-type] } ^