I have a Problem in Pset 1 Credit in CS50

cs50

#1

https://courses.edx.org/courses/course-v1:HarvardX+CS50+X/courseware/bdc606f10e7347f6a61a341c4544bbf7/71a3739357a54a0e81348468341214b3/4?activate_block_id=block-v1%3AHarvardX%2BCS50%2BX%2Btype%40vertical%2Bblock%409f71a7e1871d46aea6f1bd2ee5ab23ac