实验

#include<stdio.h>
int main(){
int a=5,b=7,c=100,d,e,f;
d=a/b*c;
e=a*c/b;
f=c/b*a;
printf("d=%d,e=%d,f=%d",d,e,f);
return 0;

}

#include<stdio.h>
int main(){
int x=1234;
float f=123.456;
double m=123.456;
char ch='a';
char a[]="hello,world.";
int y=3,z=4;
printf("%d,%d\n",y,z);
printf("y=%d,z=%d\n",y,z);
printf("%8d,%2d\n",x,x);
printf("%f,%8f,%8.1f,%0.2f,%.2e\n",f,f,f,f,f);
printf("%1f\n",m);
printf("%3c\n",ch);
printf("%s\n%15s\n%10.5s\n%2.5s\n%.3s\n",a,a,a,a,a);
return 0;


}