Compilare: user.cpp: In function ‘void prod_huge(long long unsigned int*, long long unsigned int*)’: user.cpp:9:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i <= a[0] + b[0]; i ++) ^ user.cpp:11:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1;i <= a[0]; i ++) ^ user.cpp:12:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 1; j <= b[0]; j ++) ^ user.cpp:14:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1;i <= c[0]; i ++){ ^ user.cpp: In function ‘void prod(long long unsigned int)’: user.cpp:24:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1; i <= nr[0]; i ++){ ^ user.cpp: In function ‘void mypow(int, int)’: user.cpp:45:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i <= c[0]; i ++) ^ user.cpp:49:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i <= c[0]; i ++) ^ user.cpp: In function ‘int main()’: user.cpp:78:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (x = 0; x <= c[0]; x ++) ^ user.cpp:83:27: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long unsigned int’ [-Wformat=] printf("%d", nr[i]); ^ user.cpp:54:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trapeze.in", "r", stdin); ^ user.cpp:55:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trapeze.out", "w", stdout); ^ user.cpp:57:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^