Compilare: user.cpp: In function ‘int main()’: user.cpp:32:80: warning: format ‘%c’ expects argument of type ‘char*’, but argument 2 has type ‘short int*’ [-Wformat=] for (int i = 1;i <= n;++i) for (int j = 1;j <= m;++j) scanf("%c\n",&s[i][j]),s[i][j]-='0'; ^ user.cpp:29:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ternar.in","r",stdin); ^ user.cpp:30:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n",&n,&m); ^ user.cpp:32:94: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (int i = 1;i <= n;++i) for (int j = 1;j <= m;++j) scanf("%c\n",&s[i][j]),s[i][j]-='0'; ^