函数

xt12_1

/*z232 27*/
#include<stdio.h>
void conver(int n)
{
while(n>=10)
n/=10;
printf("%d\n",n);
}
main()
{
int num;
scanf("%d",&num);
conver(num);
}

xt12_2

/*z232 27_1*/
#include<stdio.h>
void conver()
{
int n;
scanf("%d",&n);
while(n>=10)
n/=10;
printf("%d\n",n);
}
main()
{
conver();
}

xt12_3

/*z232 27_2*/
#include<stdio.h>
int conver(int n)
{
while(n>=10)
n/=10;
return n;
}
main()
{
int num;
scanf("%d",&num);
printf("%d\n",conver(num));
}

xt12_4

/*z232 27_3*/
#include<stdio.h>
int conver()
{
int n;
scanf("%d",&n);
while(n>=10)
n/=10;
return n;
}
main()
{
printf("%d\n",conver());
}

xt12_5

/*z115 6.17*/
#include <stdio.h>
func(int a,int b)
{
int c;
c=a+b;
return c;
}
main()
{
int x=6,y=7,z=8,r;
r=func((x--,y=x+y),z--);
printf("%d\n",r);
}

xt12_6

/*z116 6.19*/
#include <stdio.h>
void fun(int a,int b,int c)
{
a+=4;
b-=5;
c*=2;
printf("%d,%d,%d\n",a,b,c);
}
main()
{
int x=10,y=20,z=30,fun1();
fun(x,y,fun1(y,z));
printf("%d,%d,%d\n",x,y,z);
}
int fun1(int m,int n)
{
if(m>n) return m;
else return n;
}

xt12_7

/*z263 24*/
#include <stdio.h>
age(int n)
{
int c;
if(n==1) c=10;
else c=age(n-1)+2;
return c;
}
main()
{
printf("%d\n",age(5));
}

xt12_8

#include <stdio.h>
main()
{
int a,b;
void fun(int,int);
scanf("%d%d",&a,&b);
fun(a,b);
printf("a=%d,b=%d\n",a,b);
}
void fun(int x,int y)
{
x+=5;
y*=3;
printf("x=%d,y=%d\n",x,y);
}