方式一、

while，if语句

#define _CRT_SECURE_NO_WARNINGS 1#include<stdio.h>
int main()
{int i=1;while(i<=100){if(1 == i%2)printf("%d ",i);i++;}return 0;
}

方式二、 

while，if语句

#define _CRT_SECURE_NO_WARNINGS 1#include<stdio.h>
int main()
{int i=1;while(i<=100){if(0 != i%2)printf("%d ",i);i+=2;}return 0;
}

方式三：

for，if语句

#define _CRT_SECURE_NO_WARNINGS 1#include<stdio.h>
int main()
{int i;for ( i = 1; i < 100; i++){if (1 == i%2){printf("%d ",i);}}return 0;
}