Compilare: main.cpp: In function 'void display()': main.cpp:59:9: warning: unused variable 'i' [-Wunused-variable] int i; ^ main.cpp: In function 'void read()': main.cpp:8:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] int i;scanf("%d%d",&m,&n); ^ main.cpp:10:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^ main.cpp: In function 'int main()': main.cpp:65:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("suman.in","r",stdin); ^ main.cpp:66:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("suman.out","w",stdout); ^