Compilare: main.cpp: In function 'int main()': main.cpp:35:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("elicoptere.in", "r", stdin); ^ main.cpp:36:43: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("elicoptere.out", "w", stdout); ^ main.cpp:37:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &T); ^ main.cpp:38:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &K); ^ main.cpp:39:125: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(i=1; i<=N; ++i) {scanf("%f%f%f%f%f%f", &List[i].x1, &List[i].y1, &List[i].x2, &List[i].y2, &List[i].x3, &List[i].y3); D[i][i]=K+1;} ^