long_extnalΒΆ

long_extnal.c

/* Longest Line Program using External Variables*/

#include<stdio.h>
#define MAXLEN 1000

char line[MAXLEN],longest[MAXLEN];

int getline(void);
void copy(void);

int main(void)
{
    int len,max;
    max = 0;
    while((len=getline())>0)
    {
        if( len > max)
        {
          max = len;
          copy();
        }
    }
    if( max > 0)
        printf("%s",longest);

    return 0;
}
int getline()
{
    int c,i;
    
    for(i=0;i<MAXLEN -1 &&(c=getchar())!=EOF && c!= '\n';++i)
        line[i] = c;
    if( c == '\n')
    {
        line[i] = c;
        ++i;
    }
    line[i] = '\0';
    return i;
}
void copy()
{
    int i;
    i = 0;
    while((longest[i]=line[i])!='\0')
        ++i;
}
 
    
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