Compilare: user.cpp: In function ‘int main()’: user.cpp:64:9: warning: unused variable ‘n’ [-Wunused-variable] int n, s, t,i ; ^ user.cpp:64:12: warning: unused variable ‘s’ [-Wunused-variable] int n, s, t,i ; ^ user.cpp:65:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &t); ^ user.cpp:69:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &n1, &n2); ^ user.cpp:72:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v1[j]); ^ user.cpp:76:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &v2[j]); ^