Compilare: user.c: In function ‘main’: user.c:27:5: warning: implicit declaration of function ‘memset’ [-Wimplicit-function-declaration] memset(sum, 0, LIMIT * sizeof(sum[0])); ^~~~~~ user.c:27:5: warning: incompatible implicit declaration of built-in function ‘memset’ user.c:27:5: note: include ‘<string.h>’ or provide a declaration of ‘memset’ user.c:18:5: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^~~~~~~~~~~~~~~~~~~ user.c:22:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &v[i]); ^~~~~~~~~~~~~~~~~~~~~~