Compilare: main.cpp: In function 'void eratostene()': main.cpp:23:12: warning: unused variable 'nr' [-Wunused-variable] int i, j, nr = 1; ^~ main.cpp: In function 'int main()': main.cpp:137:10: warning: unused variable 'excludePrimeP' [-Wunused-variable] int excludePrimeP = 0; ^~~~~~~~~~~~~ main.cpp: In function 'int findMex(int)': main.cpp:73:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:83:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &t, &c); ^ main.cpp:98:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ main.cpp:100:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &a[i]); ^