#include <ctype.h>
int isspace(int c);
#include <ctype.h>
main(){
char str[] = "123c @# FD\tsP[e?\n";
int i;
for(i = 0; str[i] != 0; i++)
if(isspace(str[i]))
printf("str[%d] is a white-space character:%d\n", i, str[i]);
}
str[4] is a white-space character:32 str[7] is a white-space character:32 str[10] is a white-space character:9 // \t str[16] is a white-space character:10 // \t
#inlude <ctype.h>
int ispunct(int c);
#include <stdio.h>
#include <ctype.h>
int main ()
{
int i=0;
int cx=0;
char str[]="Hello, welcome!";
while (str[i])
{
if (ispunct(str[i])) cx++;
i++;
}
printf ("Sentence contains %d punctuation characters.\n", cx);
return 0;
}
Sentence contains 2 punctuation characters.
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