Compilare: user.cpp: In function ‘int main()’: user.cpp:30:21: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&p); ^ user.cpp:31:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d\n",&n,&m); ^ user.cpp:37:46: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(j=1;j<=m;j++) fscanf(f,"%c",&a[i][j]); ^ user.cpp:38:18: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"\n"); ^ user.cpp:98:36: warning: ‘cod’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(g,"%d %d\n%c",pozi,pozj,cod); ^