Compilare: user.cpp: In function ‘void findc(int, char)’: user.cpp:20:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(matc[i][j]==c) ^ user.cpp: In function ‘int main()’: user.cpp:120:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d\n",&n,&m); ^ user.cpp:123:28: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(matc[i],N,in); ^ user.cpp: In function ‘void cauta()’: user.cpp:116:56: warning: ‘mini.punct::c’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(out,"%d %d %d\n",valmin+1,mini.l+1,mini.c+1); ^ user.cpp:116:56: warning: ‘mini.punct::l’ may be used uninitialized in this function [-Wmaybe-uninitialized]