Compilare: main.cpp: In function 'int ecuatie()': main.cpp:18:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<strlen(s); i++){ ~^~~~~~~~~~ main.cpp:56:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ main.cpp: In function 'int main()': main.cpp:94:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("eq4.in", "r", stdin); ^ main.cpp:97:47: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%s%d%d%lld", &cer, s, &A, &B, &E); ^ main.cpp: In function 'int ecuatie()': main.cpp:33:34: warning: 'disc' may be used uninitialized in this function [-Wmaybe-uninitialized] lib = lib + disc * coef; ~~~~~^~~~~~