#include <stdio.h>//找出一百到二百之间的素数
#include <stdlib.h>
int main(){
int m, i;
for (m = 100; m >= 200; m++){
for (i = 2; i <= m;m++)
if (m%i == 0)
break;
if (i >= m);
printf("%d", m);
}
printf("\n");
system("pause");
return 0;
}
#include <stdio.h>//输入九九乘法口诀表
#include <stdlib.h>
int main(){
int i, j;
for (i = 1; i <= 9; i++){
for (j = 1; j <= i; j++){
printf("%d*%d = %d", j, i, j*i);
if (i==j)
printf("\n");
}
}
system("pause");
return 0;
#include <stdlib.h>
int main(){
int i, j;
for (i = 1; i <= 9; i++){
for (j = 1; j <= i; j++){
printf("%d*%d = %d", j, i, j*i);
if (i==j)
printf("\n");
}
}
system("pause");
return 0;
}
#include<stdio.h>//找出一千到两千年之间的闰年
int main(){
int year;
for (year = 1000; year <= 2000; year++){
if (year % 400 == 0){
printf("%d", year);
}
else if (year % 4 == 0 && year % 100 != 0){
printf("%d", year);
}
}
system("pause");
return 0;
}
int main(){
int year;
for (year = 1000; year <= 2000; year++){
if (year % 400 == 0){
printf("%d", year);
}
else if (year % 4 == 0 && year % 100 != 0){
printf("%d", year);
}
}
system("pause");
return 0;
}