Compilare: main.cpp: In function 'void ridput(int)': main.cpp:26:9: warning: unused variable 'i' [-Wunused-variable] int i , j; ^ main.cpp:26:13: warning: unused variable 'j' [-Wunused-variable] int i , j; ^ main.cpp: In function 'int main()': main.cpp:60:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&t); ^ main.cpp:62:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&a,&b); ^