#include<stdio.h>intmain(){
int a, b, c;longint u, n;char c1, c2;double x, y, z;
a =3;
b =4;
c =5;
x =1.2;
y =2.4;
z =-3.6;
u =51274;
n =128765;
c1 ='a';
c2 ='b';printf("a= %d b= %d c= %d\n", a, b, c);printf("x=%.6f,y=%.6f,z=%.6f\n", x, y, z);printf("x+y= %.2f y+z=%.2f z+x=%.2f\n", x + y, y + z, z + x);printf("u= %ld n= %ld\n", u, n);printf("c1='%c'or %d(ASCII)\n", c1, c1);printf("c2='%c'or %d(ASCII)\n", c2 -32, c2);return0;}
#include<stdio.h>intmain(){
double a, b, c, x, y, z, k, sum, left;scanf("%lf %lf %lf\n",&a,&b,&c);scanf("%lf",&k);
x =12.5* a;
y =15.7* b;
z =8.5* c;
sum = x + y + z;
left = k - sum;printf("sum=%.2f\n", sum);printf("left=%.2f\n", left);return0;}
#include<stdio.h>intmain(){
double a, b, c, d, sum;double average;scanf("%lf,%lf,%lf,%lf",&a,&b,&c,&d);
sum = a + b + c + d;
average =(a + b + c + d)*1.0/4;printf("sum=%.f;average=%.2f\n", sum, average);return0;}
#include<stdio.h>#define PI 3.1415926intmain(){
double r, h, l, s, ss, v, vv;scanf("%lf %lf",&r,&h);
l =2* PI * r;
s = PI * r * r;
ss =4* PI * r * r;
v =4.0/3* PI * r * r * r;
vv = s * h;printf("l=%.2f\n", l);printf("s=%.2f\n", s);printf("ss=%.2f\n", ss);printf("v=%.2f\n", v);printf("vv=%.2f\n", vv);return0;}