Question

This is my source code:

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

void main()
{
    int broj_znakova,i=0;
    char niz1[81],niz2[81];

    printf("Enter something, for end Ctrl/c \n\n");
    while(fgets(niz1,81,stdin)!=NULL)
    {
        continue;
    }
    printf("You just enter: %s \n",niz1);
    printf("This string is long %d\n",(strlen(niz1)-1));
    strcpy(niz1,niz2);
    printf("niz2 is %s\n",niz2);
    if(strcmp(niz1,niz2)==0)
    {
        printf("niz1 and niz2 is same\n");
    }
    else
    {
        printf("niz1 != niz2\n");
    }
    while(niz1[i]!='\n')
    {
        if(niz1[i]==' ')
        {
            broj_znakova ++;
            i=i+1;
        }
    }
    printf("Spaces in string = %d\n",broj_znakova);
}

When i press Ctrl/c i got a bunch of strange characters, can someone help???
I google something about flushing but i’m new 🙂

Answer 1

The contents of niz2 is not initialized. It will result in undefined behavior. Perhaps you meant to copy niz1 to niz2. If so, then you need to reverse the parameters in the strcpy call. With strcpy, the first parameter is the target.

Note too that the variable broj_znakova is never initialized.