Please help me answer those question thank you in advance

6. 15 points] How do we define a variable to avoid a name conflict with a variable with a different name in another file. 7. [5 points] Write 4 of the asiignment operators available in C. [S points] Which of the two conventions do we use to define a jagg (an array with unequal row sizes) 8. 15 points] Which of the two conventions do we use to define a jaged 2-D array 9. 15 points] What does the following function do? xxx (char *a, char *b) while (*a++*b++)i 10. [5 points] The following piece of code int *x; x-(int *)malloc (sizeof (int)); (x NULL) || (x[0]-3)i Is there something wrong with this code