Compilare: main.cpp: In function 'int main()': main.cpp:35:41: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d %d",&cerinta,&n,&m); ^ main.cpp:36:23: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%c",&c); ^ main.cpp:41:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%c",&c); ^ main.cpp:44:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%c",&c); ^ main.cpp:116:16: warning: 'cod_max' may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(out,"%d %d\n%c",i_max,j_max,cod_max); ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~