2017年编程的开始



1，#include<stdio.h>


int main()


{


    printf("Hello World!\n");


    return0;


}

2，#include<stdio.h>


int main()


{


    printf("This is a C program.\n");


    return0;




}

3，

#include<stdio.h>


int main()


{


    printf("#\n");


    printf("##\n");


    printf("###\n");


    printf("####\n");


    printf("#####\n");


    printf("######\n");


    return0;




}

4，

#include<stdio.h>


int main()


{


    printf("*****\n");


    printf("*\n");


    printf("*\n");


    printf("*\n");


    printf("*****\n");


    return0;


}