Eroare de compilare: user.c:25:1: error: unknown type name ‘DREPTUNGHI’ DREPTUNGHI comun(DREPTUNGHI d1, DREPTUNGHI d2) ^ user.c:25:18: error: unknown type name ‘DREPTUNGHI’ DREPTUNGHI comun(DREPTUNGHI d1, DREPTUNGHI d2) ^ user.c:25:33: error: unknown type name ‘DREPTUNGHI’ DREPTUNGHI comun(DREPTUNGHI d1, DREPTUNGHI d2) ^ user.c:37:21: error: unknown type name ‘DREPTUNGHI’ long long perimetru(DREPTUNGHI d1) ^ user.c:44:16: error: unknown type name ‘DREPTUNGHI’ long long arie(DREPTUNGHI d1) ^ user.c: In function ‘main’: user.c:56:5: error: unknown type name ‘DREPTUNGHI’ DREPTUNGHI intd1d2, intd2d3, intd3d1, intd1d2d3; ^ user.c:58:5: warning: implicit declaration of function ‘comun’ [-Wimplicit-function-declaration] intd1d2=comun(d1, d2); ^ user.c:62:5: warning: implicit declaration of function ‘arie’ [-Wimplicit-function-declaration] a=(long long)arie(d1)+arie(d2)+arie(d3)-arie(intd1d2)-arie(intd3d1)-arie(intd2d3)+arie(intd1d2d3); ^ user.c:63:5: warning: implicit declaration of function ‘perimetru’ [-Wimplicit-function-declaration] p=(long long)perimetru(d1)+perimetru(d2)+perimetru(d3)-perimetru(intd1d2)-perimetru(intd2d3)-perimetru(intd3d1)+perimetru(intd1d2d3); ^ user.c:53:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("reuniune.in","r",stdin); ^ user.c:54:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("reuniune.out","w",stdout); ^ user.c:55:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d%d%d%d%d%d%d",&d1.x0,&d1.y0,&d1.x1,&d1.y1,&d2.x0,&d2.y0,&d2.x1,&d2.y1,&d3.x0,&d3.y0,&d3.x1,&d3.y1); ^