... fiboni(int ){ int i,p,p1 =1, p2 =1; for (i=3;i<=n;i++){p=p1+p2; p1=p2; p2=p; } return (p); }// Bai 4/*chuong trinh tinh giai thua cach n!/*Tinh giai thua: =1* 3*5 neu n le=2*4*6 neu ... ("%u%u",&i,&n);switch(i){case 1: case 3:case 5:case 7:case 8:case 10 :case 12 :printf("thang co 31 ngay");break;case 4:case 6:case 9:case 11 :printf("thang co 30 ngay ");break;case ... mtkq[i][j] =1; for(m =1; m<=n;m++)mtkq[i][j]+=mt1[i][j]*mt2[i][j]; }//In ket waprintf("\nTich ma tran:\n");for(i =1; i<=n;i++) {for(j =1; j<=n;j++) printf("\t\t%d",mt1[i][j]);...