Compilare: user.c: In function ‘main’: user.c:13:3: warning: implicit declaration of function ‘memset’ [-Wimplicit-function-declaration] memset(v1, 0, 100001); ^ user.c:13:3: warning: incompatible implicit declaration of built-in function ‘memset’ [enabled by default] user.c:10:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &t); ^ user.c:12:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &n, &m); ^ user.c:16:10: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d", &x, &y); ^