(Solved): 1. Given the following C code, design a C program - (1) assigning 123 to a[4] using only the point ...

1. Given the following $$\mathrm{C}$$ code, design a $$\mathrm{C}$$ program - (1) assigning 123 to a[4] using only the pointer $$q$$, (2) printing a $$[4]$$ using only the pointer $$p$$. Do not modify the following $$\mathrm{C}$$ code and do not use the array $$a$$. $$\begin{array}{l}\text{ int a[10], *p, *q; }\\ \begin{array}{l}\mathrm{p}=\&\mathrm{a}[2];\\ \mathrm{q}=\mathrm{p}+1\end{array}\end{array}$$ Test it and take a screenshot showing your $$\mathrm{C}$$ code. (4 points) 2. Given the following $$\mathrm{C}$$ code, design a $$\mathrm{C}$$ program - (1) moving a file pointer using fseek (2) saving this sentence "This is Your Name" to sample.txt using fputs with $$fp$$. Do not modify the following C code. int main ()\{ FILE *fp; fp $$=$$ fopen("sample.txt","w+"); fputs("This is CSIT315", fp); return(0); Save your $$\mathrm{C}$$ program to lab5.c, and take a screenshot showing your $$\mathrm{C}$$ code and its output. (4 points) 3. Design a shell program (called "auto_compile_run.sh") meeting the following requirements ( 2 points) a. Two file names are given as two arguments of auto_compile_run.sh. For example, auto_compile_run.sh lab5.c lab5 The first argument (lab5.c) is a $$\mathrm{C}$$ file, and the second argument is its executable file (lab5). b. If there is no argument, echo "No Input Files". c. In auto_compile_run.sh, the C program must be compiled and run.