Thread: Printf statement within a decrementing for loop does not print correctly

Code:

int main(int argc, const char * argv[]) {
    
    char str[79];
    char reverse[79][79];
    char *ptr;
    
    int i = 0;
    printf("Input: ");
    
    
    fgets(str,79,stdin);
    ptr = strtok(str," ");
    
    
        while (ptr !=NULL){
        
        strcpy(reverse[i],ptr);
        i++;
        ptr = strtok(NULL," ");
        }
    
    
      for(i=2;i>=0;i--) {
        printf(" %s",reverse[i]);
    }
    
    
    return 0;
}

Basically my program will reverse words.
for example
input:bees and birds
output: birds and bees

However, somehow my for loop skips a line after i=0

input: birds and bees
output: birds <------ After 1st world, a line is skipped for no reason.
andbees


how does this happen? it seems impossible.

Nevermind. I figured it out.

You need to remove the newline at the end of the string before you do the reversing.

That can be done pretty simply with a small branch like this:

Code:

char *newline = strchr(str, '\n');
if (newline != NULL)
   *newline = '\0';

Something like that would remove the newline in the output.

What is really hard to explain is why "andbirds" is squished together in the output.