include <stdio.h> int main() { int i,j,n=0; for(i=1;i<=4;i++) { for(j=1;j<=5;j++,

#include int main(){ int i,j,n=0; i=1; do { j=1; while(j<=5){ if (n%5==0) printf ("\n"); printf("%5d",i*j); j++,n++; } }while(++i<=4); printf("\n"); return 0;}这样就好了