In C programming help please my code in the picture only prints Invalid number of arguments before i get a chance to test the argument. It should pass all these $5$ cases with the following output. Thanks a lot

Case $1$ Input: speak when you are angry and you will make the best speech you will ever regret! Output: valid

Case $2$ Input: $\_\_\_\_\_\_\_\_($Blank$/$Nothing$)$

Output: invalid number of arguments

Case $3$ Input: c programming $2$nd edition

Output: valid

Case $4$ Input: it is not how you play the game, it is how the game plays you

Output: invalid

Case $5$ Input: good words are worth much ;and cost little.

Output: invalid