Compilare: main.cpp: In function 'int add(int)': main.cpp:17:9: warning: unused variable 'initial_value' [-Wunused-variable] int initial_value = value; ^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:54:9: warning: unused variable 'value' [-Wunused-variable] int value = 0; ^~~~~ main.cpp:41:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("nane.in", "r", stdin); ^ main.cpp:42:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("nane.out", "w", stdout); ^ main.cpp:43:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &k); ^ main.cpp:51:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &nr[i]); ^