Compilare: main.cpp: In function 'void Lee()': main.cpp:24:15: warning: unused variable 'v' [-Wunused-variable] element s,v; ^ main.cpp: In function 'int main()': main.cpp:54:29: 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:60:37: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&a[i][j]); ^