Question

各位高手帮忙：用C语言编写一个程序，统计输入字符串中字符‘a’出现的次数。怎么编啊？

谢谢！

Answer 1

#include <string.h>

int strc()
{
char *s="good good study,day day up!";
char *p;
int sum=0;

p=strchr(s,'a');
while(p)
{
sum++;
*s=*p;
p=strchr(s,'a');
}
return sum;
}

Answer 2

#include <stdio.h>
int main(void)
{
char ch[100];
char* p=ch;
int nCount=0;
gets(p);
while (*p++)
if(*p=='a') nCount++;

printf("%d",nCount);
return 0;
}

Answer 3

main()
{char x;
int i=0;
printf("Please input:\n");
scanf("%c",&x);
for(;x!='.';)
{if(x=='a') i+=1;
scanf("%c",&x);}
printf("There is:%d\n",i);}
只要你输入的字符串以句号结尾就行了。