#include <>
void print_star(void)
{
printf("*****************\n");
}
void print_welcome(void)
{
printf("C language,welcome!\n");
}
void main()
{
print_star();
print_welcome();
print_star();
getchar();
}
演示2
#include ""
int sum(int i,int j)
{
return(i + j);
}
void main()
{
int n1,n2;
printf("input 2 numbers:\n");
scanf("%d%d",&n1,&n2);
printf("the sum = %d\n",sum(n1,n2));
getchar();
}
演示3
#include ""
int maxnum(int,int,int);
main()
{
int a,b,c;
printf("Please enter 3 numbers:\n");
scanf("%d,%d,%d",&a,&b,&c);
printf("Maxnum is %d\n",maxnum(a,b,c)); return 0;
}
int maxnum(int x,int y,int z) {
int max=x;
if(y>max)
max = y;
if(z>max)
max = z;
return max;
}
演示4
#include <>
int s1(int n)
{
int j,s;
s=0;
for(j=1;j<=n;j++)
s=s+j;
return s;
}
int sum(int n)
{
int i,s=0;
for(i=1;i<=n;i++)
s=s+s1(i);
return s;
}
void main()
{
int n;
printf("n:");
scanf("%d",&n);
printf("s=%d\n",sum(n)); }
演示5
#include <>
void func(int n)
{
int i;
for(i=n-1;i>=1;i--)
n=n+i;
printf("n=%d\n",n);
}
void main()
{
int n;
printf("Input n:");
scanf("%d",&n);
func(n);
printf("n=%d\n",n);
}
演示6
#include <>
void swap(int a,int b)
{
int temp;
temp=a;a=b;b=temp;
printf("swap : a=%d,b=%d\n",a,b); }
void main()
{
int a,b;
a=3;b=10;
swap(a,b);
printf("a=%d,b=%d\n",a,b);
}
演示7
#include <>
int func(int a,int b)
{
int c;
c=a+b;
return c;
}
void main()
{
int x=6,y=7,z=8,r;
r=func((x--,y++,x+y),z--);
printf("%d\n",r);
}
演示8
#include <>
max(float x,float y)
{
return x>y x:y;
}
void main()
{
printf("%d\n",max(2,);
}
演示9
#include <>
int sum(int n)
{
int i,s=0;
for(i=0;i<=n;i++)
s=s+i;
return s;
}
void main()
{
int m,sn;
scanf("%d",&m);
sn=sum(m);
printf("the sum is %d\n",sn);
}
演示10
#include <>
void swap(int x,int y);
int main()
{
int a,b;
printf("input 2 numbers :\n");
scanf("%d,%d",&a,&b);
printf("input number is:a=%d,b=%d \n",a,b);
