Compilare: user.cpp: In function ‘int main()’: user.cpp:41:24: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘long long int*’ [-Wformat=] fscanf(IN, "%d", &t); ^ user.cpp:45:34: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘long long int*’ [-Wformat=] fscanf(IN, "%d%d", &n, &k); ^ user.cpp:45:34: warning: format ‘%d’ expects argument of type ‘int*’, but argument 4 has type ‘long long int*’ [-Wformat=] user.cpp:38:30: warning: unused variable ‘j’ [-Wunused-variable] long long t, n, k, l, i, j; ^ user.cpp:41:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN, "%d", &t); ^ user.cpp:45:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN, "%d%d", &n, &k); ^