Compilare: main.cpp: In function 'int f(int, int, int, int)': main.cpp:34:17: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int lin=l1;lin<=l2;lin++) ^~~ main.cpp:37:21: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' i++; ^ main.cpp:31:21: warning: unused variable 'num' [-Wunused-variable] int num=0; ^~~ main.cpp:40:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:44:23: warning: format '%s' expects argument of type 'char*', but argument 3 has type 'char (*)[1000001]' [-Wformat=] fscanf(fin,"%s",&s); ^ main.cpp:44:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%s",&s); ^