void stat(char *str)
{
int n1,n2,n3,n4;
n1 = n2 = n3 = n4 = 0;
while (*str)
{
if ((*str >= 'a' && *str = 'A' && *str = '0' && *str <= '9')
n2++;
else if (*str == ' ')
n3++;
else n4++;
str++;
}
printf("the string has %d letters, %d numbers, %d spaces and %d other characters。
\n", n1, n2, n3, n4);
}
void main()
{
char str[51];
printf("please enter the string (no more than 50 characters): ");
scanf("%[^\n]", str); //仅当回车时才读入整个字符串，如果用%s则会在遇到空格时就读入字符串了。
stat(str);
}
。
对楼上的略作修改:
#include
#include
void stat(char *str)
{
int n1,n2,n3,n4;
n1 = n2 = n3 = n4 = 0;
while (*str!='\0')
{
if ((*str >= 'a' && *str = 'A' && *str = '0' && *str <= '9')
n2++;
else if (*str == ' ')
n3++;
else n4++;
str++;
}
printf("the string has %d letters, %d numbers, %d spaces and %d other characters。
\n", n1, n2, n3, n4);
}
void main()
{
char str[51];
clrscr();
printf("please enter the string (no more than 50 characters): \n");
gets(str);
stat(str);
getch();
}
。
#include "stdio。h" #include "ctype。
h" main() { char c[256]="grw etG&&HG&^(*&^&( 9 8 7 86Hrtghh"; register int i; int a=0,n=0,s=0,o=0; for(i=0;i<256;i++) { if(c[i]=='\0') i=256; if(isalpha(c[i])) a++; else if(isdigit(c[i])) n++; else if(isspace(c[i])) s++; else o++; } printf("Alpha:\t%d\nNumber:\t%d\nSpace:\t%d\nOthers:\t%d\n",a,n,s,o); }。
答：你可用ASC码来判断.详情>>
