Compilare: user.cpp: In function ‘int main()’: user.cpp:77:29: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘unsigned char*’ [-Wformat=] scanf("%d%d%d", &N,&M,&Q); ^ user.cpp:77:29: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘unsigned char*’ [-Wformat=] user.cpp:85:42: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘unsigned char*’ [-Wformat=] scanf("%d%d%d%d", &l1,&c1,&l2,&c2); ^ user.cpp:85:42: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘unsigned char*’ [-Wformat=] user.cpp:85:42: warning: format ‘%d’ expects argument of type ‘int*’, but argument 4 has type ‘unsigned char*’ [-Wformat=] user.cpp:85:42: warning: format ‘%d’ expects argument of type ‘int*’, but argument 5 has type ‘unsigned char*’ [-Wformat=] user.cpp:75:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("matrice3.in","r",stdin); ^ user.cpp:76:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("matrice3.out","w",stdout); ^ user.cpp:77:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &N,&M,&Q); ^ user.cpp:79:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", (a[i]+1)); ^ user.cpp:85:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &l1,&c1,&l2,&c2); ^