Compilare: main.cpp: In function 'void back(int, int, int)': main.cpp:8:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=1;i<=k;i++) ^~~ main.cpp:10:12: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' printf("\n"); ^~~~~~ main.cpp: In function 'int main()': main.cpp:24:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("combinari.in", "r", stdin); ^ main.cpp:25:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("combinari.out", "w", stdout); ^ main.cpp:26:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^