#include<stdio.h>
 
float input(char*c){
	float x;
	printf("%s",c);
	scanf("%f",&x);
	return x;
}
float calcs(float v,float h){
	float s;
	s=v*h;
	return s;
}
float calcl(float v,float h){
	float l;
	l=2*(v+h);
	return l;
}
void output(char*c,float x){
	printf("%s%f\n",c,x);
	return;
}
int main(){
	float v,h,s,l;
	v=input("縦の長さは\n");
	h=input("横の長さは\n");
	s=calcs(v,h);
	l=calcl(v,h);
	output("面積は",s);
	output("周の長さは",l);
	return 0;
}

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