Compilare: main.cpp: In function 'int main()': main.cpp:60:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d",&n,&m); ^ main.cpp:61:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%c",&c); ^ main.cpp:66:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%c",&c); ^ main.cpp:72:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%c",&c); ^ main.cpp:128:39: warning: 'jmax' may be used uninitialized in this function [-Wmaybe-uninitialized] if (i+j < imax+jmax) ~~~~^~~~~ main.cpp:128:39: warning: 'imax' may be used uninitialized in this function [-Wmaybe-uninitialized]