Modifies a string via pointer - C String

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Description

Modifies a string via pointer

Demo Code

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

#define LIMIT 81/*w ww.j a  va2 s  . com*/
void ToUpper(char *);
int PunctCount(const char *);

int main(void){
    char line[LIMIT];
    char * find;
    
    puts("Please enter a line:");
    fgets(line, LIMIT, stdin);
    find = strchr(line, '\n');   // look for newline
    if (find)                    // if the address is not NULL,
        *find = '\0';            // place a null character there
    ToUpper(line);
    puts(line);
    printf("That line has %d punctuation characters.\n",
           PunctCount(line));
    
    return 0;
}

void ToUpper(char * str)
{
    while (*str)
    {
        *str = toupper(*str);
        str++;
    }
}

int PunctCount(const char * str)
{
    int ct = 0;
    while (*str)
    {
        if (ispunct(*str))
            ct++;
        str++;
    }
    
    return ct;
}

Result


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