... a[][MAX], int x, int cot) { int dem = 0; for(int j = 0; j < cot; j++) { if(a[x][j] > 0) { dem++; } } return dem; } int main() { float a[MAX][MAX]; int dong, cot; NhapMang(a, dong, cot); XuatMang(a, ... void XuatMang(float a[][MAX], int dong, int cot) { for(int i = 0; i < dong; i++) { for(int j = 0; j < cot; j++) { printf("%8.3f", a[i][j]); } printf("\n\n"); } } int DemSoLuongSoDuongTren1Dong(float ... scanf("%d", &x); if(x < || x > dong - 1) { printf("\nChi so dong x khong hop le Xin kiem tra lai !"); } }while(x < || x > dong - 1) ; int dem = DemSoLuongSoDuongTren1Dong(a, x, cot); printf("\nSo luong...