Copying valid strings to 2d array in C - c

Question

I am checking if a function returns true, it prints out valid strings according some other function I got. At the moment, it's printing it out correctly but it is also printing empty lines which seem to correspond to the invalid strings.
How can I make these empty lines go away?
Here is my code:
int main()
{
int i, count = 0;
char input[10];
char validStr[10][60] = {""};
for (i = 0; i < 60; ++i){
if(fgets(input,10, stdin) == NULL){
break;
}
input[strcspn(input,"\n")] = '\0';
if(checkIfValid(input)){
memcpy(validStr[i],input,sizeof(input));
count++;
}
}
printf("%d\n",count);
for (int j = 0 ; j < count; ++j){
printf("%s\n",validStr[j]);
}
}
The count indicates it is printing only the valid strings but as you can tell by the pic it prints white lines.
Note: For various reasons the program needs to follow the current order so the output is printed after the first for loop.
Thanks in advance!

Answer 1

Instead of this:
if(checkIfValid(input)){
memcpy(validStr[i],input,sizeof(input));
count++;
}
This:
if(checkIfValid(input)){
memcpy(validStr[count],input,sizeof(input));
count++;
}
As others have pointed out in the comments, you want to safely secure that string copy. May I suggest:
if(checkIfValid(input)){
char* dst = validStr[count];
size_t MAXLEN = 10;
strncpy(dst, input, MAXLEN);
dest[MAXLEN-1] = '\0';
count++;
}

Answer 2

Continuing from the comment, if you want to store the entire string, you need to provide adequate space for the nul-terminating character.
AAAAAAAAAA
QELETIURTE
...
contain strings that are 10 characters long and will not fit in input as declared char[10].
Instead of looping with a for, allow the return from fgets() control your read-loop and keep count as a condition controlling the loop to ensure you protect your array bounds, e.g.
#include <stdio.h>
#include <string.h>
#define MAXC 128 /* if you need a constant, #define one (or more) */
#define NSTR 10
int checkIfValid (const char *s) { return 1; (void)s; }
int main(void)
{
size_t count = 0;
char input[MAXC];
char validStr[NSTR][MAXC] = {""};
while (count < NSTR && fgets (input, sizeof input, stdin)) {
input[strcspn(input,"\n")] = '\0';
if(checkIfValid(input)){
strcpy (validStr[count], input);
count++;
}
}
printf ("%zu\n",count);
for (size_t j = 0 ; j < count; ++j) {
printf("%s\n",validStr[j]);
}
}
(adjust your array declaration for 60 strings of 10 characters each)
If you want to cut off at 9 characters and ensure the stings are nul-terminated, #selbie has that covered.
Example Use/Output
With your data (as good as I could read it) in dat/validstr.txt you could do:
$ ./bin/validstring <dat/validstr.txt
6
AAAAAAAAAA
QELETIURTE
321qweve
sdsdsdfFF
GRSGGFDDSS
toLotssAAA