<p>NEED TO WRITE IT IN C LANGUAGE</p><p>You are tasked to</p><p>find</p><p>the number of selected letters present in a string</p><p><img alt="system calls sufficient enough to handle strıng manıpulation tasks. You are tasked
<p><strong>Answers must be correct. Or else it will be flagged. Allsub-parts need to be answered with step by step process showing allwork and reasoning.</strong></p><p><strong>YOU MUST PROVIDE ALL ANSWERS AS PER