实验1C语言开发环境使用和数据类型、运算符、表达式

#include<stdio.h>
int main(){
    printf(" O \n");
    printf("<H>\n");
    printf("I I\n");
    printf(" O \n");
    printf("<H>\n");
    printf("I I\n");
    
    
        return 0;
} 

 

#include <stdio.h>
int main(){
    printf(" O \t O\n");
    printf("<H>\t<H>\n");
    printf("I I\tI I\n");
    return 0;
}

 

#include <stdio.h>
int main(){
    int x,y;
    int r1,r2,r3,r4;
    x=1;
    y=2;
    r1=x+y;
    r2=x-y;
    r3=x*y;
    r4=x/y;
    printf("r1=%d\n",r1);
    printf("r2=%d\n",r2);
    printf("r3=%d\n",r3);
    printf("r4=%d\n",r4);
    return 0;
}

 

#include <stdio.h>
int main(){
    float x,y;
    float r1,r2,r3,r4;
    x=1;
    y=2;
    r1=x+y;
    r2=x-y;
    r3=x*y;
    r4=x/y;
    printf("r1=%f\n",r1);
    printf("r2=%f\n",r2);
    printf("r3=%f\n",r3);
    printf("r4=%f\n",r4);
    return 0;
}

 

#include<stdio.h>
int main(){
int n,r1,r2,r3,r4;
n=100;
r1=n*(n+1)/2;
r2=(n+1)*n/2;
r3=n/2*(n+1);
r4=(n+1)/2*n;
printf("n=%d\n",n);
printf("r1=%d\n",r1);
printf("r2=%d\n",r2);
printf("r3=%d\n",r3);
printf("r4=%d\n",r4);
return 0;
}

 

#include<stdio.h>
int main(){
int n,r1,r2,r3,r4;
n=101;
r1=n*(n+1)/2;
r2=(n+1)*n/2;
r3=n/2*(n+1);
r4=(n+1)/2*n;
printf("n=%d\n",n);
printf("r1=%d\n",r1);
printf("r2=%d\n",r2);
printf("r3=%d\n",r3);
printf("r4=%d\n",r4);
return 0;
}

 

#include<stdio.h>
int main()
{    double x,y;
    char c1,c2,c3;
    int a1,a2,a3;
    scanf("%d%d%d",&a1,&a2,&a3);
    printf("%d,%d,%d\n",a1,a2,a3);
    scanf(" %c %c %c",&c1,&c2,&c3);
    printf("%c,%c,%c\n",c1,c2,c3);
    scanf("%lf%lf",&x,&y);
    printf("%lf,%lf\n",x,y);
    
    return 0;
}

 

#include<stdio.h>
int main()
{
    int a1,a2;
    char c1,c2;
    scanf("%d %c %d %c",&a1,&c1,&a2,&c2);
    printf("a1=%d,a2=%d\n",a1,a2);
    printf("c1=%c,c2=%c\n",c1,c2);
    return 0;
}