Compilare: main.cpp: In function 'void pop()': main.cpp:23:9: warning: unused variable 'ma' [-Wunused-variable] int ma, j, i = 1; ^~ main.cpp:23:13: warning: unused variable 'j' [-Wunused-variable] int ma, j, i = 1; ^ main.cpp: In function 'int main()': main.cpp:40:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen( "algsort.in", "r", stdin ); ^ main.cpp:41:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen( "algsort.out", "w", stdout ); ^ main.cpp:45:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &n ); ^ main.cpp:47:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &k ); ^