Eroare de compilare: user.c:11:1: error: unknown type name ‘sum’ sum mat[MAX][MAX*MAX/2+10]; ^ user.c:11:5: error: variably modified ‘mat’ at file scope sum mat[MAX][MAX*MAX/2+10]; ^ user.c:11:5: error: variably modified ‘mat’ at file scope user.c: In function ‘main’: user.c:19:14: error: request for member ‘v’ in something not a structure or union mat[1][0].v[0]=1; ^ user.c:20:14: error: request for member ‘v’ in something not a structure or union mat[1][0].v[1]=1; ^ user.c:24:34: error: request for member ‘v’ in something not a structure or union add(mat[i][j].v,mat[i-1][z].v); ^ user.c:24:48: error: request for member ‘v’ in something not a structure or union add(mat[i][j].v,mat[i-1][z].v); ^ user.c:27:23: error: request for member ‘v’ in something not a structure or union for( i = mat[n][k].v[0]; i>=1 ;--i ) ^ user.c:28:27: error: request for member ‘v’ in something not a structure or union printf("%hd",mat[n][k].v[i]); ^ user.c:16:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen( IN , "r" , stdin ); ^ user.c:17:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen( OUT , "w" , stdout ); ^ user.c:18:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^