1使用字符串函数必须包含头文件
1.gets 和puts的用法，就相当于scanf和printf;
#include
#include
int main()
{ char x[100] = "ABC";
char y[100] = "123456";
gets(x);
put(x);
return 0;
}
2,strlend的用法，求数组的长度
3.计算一个数组中有几个字母
#include
int main()
{
//先定义一个字符串数组
char s[100] = "ashdsnhcucgwicgyg2345450abc";
int n, i;
n = 0;
for (i = 0; s[i] != ' '; i++)
//for循环，直到遇到 才停
if (s[i] >= 'a' && s[i] <= 'z' ||
s[i] >= 'A' && s[i] <= "Z")
//if语句做出判断，n充当计算器，循环每进行一轮n++，&&与，||或
n++;
printf("%d", n);
return 0;
}
3从字符串中打印整数
#include
int main()
{
char s[100] = "362";
//数组内'3', '6', '2', ' '
int n, i;
//n的变量初始化
n = 0;
for (i = 0;s[i] != ' '; i++) n = n * 10 + s[i] - '0';
printf("%d", n);
return 0;
}
4点单词
int main()
{
char s[100] = "ancbnd shdchajxbx bygxhx sahsxba i love you xiang bao ";
int n, i, k;
n = 0;
k = 1;
for (i=0;s[i] !=' ';i++)
if (s[i] >= 'a' && s[i] <= 'z' ||
s[i] >= 'A' && s[i] <= 'Z')
{
if (k == 1)
{
n++;
k = 0;
}
}
printf("%d", n);
return 0;
}
