两个程序练习

#include <stdio.h>
#include <string.h>

int string_n(char p[])
{
int num=1;
int i;

for(i=0;p[i]!='\0';i++)
{
if(p[i]==' ')
num++;
}

return num;
}

int main()
{
char ch[50];

printf("Please input a string:\n");
gets(ch);
printf("\nThe number of words in the string is:%d\n",string_n(ch));

return 0;
}

#include <stdio.h>
#include <math.h>

int main()
{
double y;
int x,m;

for(y = 1;y >= -1; y-=0.1)
{
m = acos(y)*10;
for(x = 1; x < m; x++)
printf(" ");
printf("*");
for(;x < 62-m;x++)
printf(" ");
printf("*\n");

}

return 0;
}