Suppose you know that when a function with prototype int decode3 (long x, long y

Question

Suppose you know that when a function with prototype int decode3 (long x, long y, long z) is compiled into assembly code, the body of the code is as follows movq %rsi, %rax subq %rdx, %rsi sara 15,%rax salq 31,%rax orq %rsi,%rax ret Parameters x, y, and z are passed in registers %rdi, %rsi, and %rax. The code stores the return value in register %rax Write C code for decode3 that will have an effect equivalent to our assembly code. You can test your solution by compiling your code with the -S switch. Your compiler may not generate identical code, but it should be functionally equivalent (and it ought to at least compile). Using the -0s flag will probably help you get similar code.

Explanation / Answer

#include #include #include void main(){ charstring[50],tmp[50]; int spcnt[50],i,j,c; clrscr(); printf("Enter a string : "); gets(string); //encode logicfor(i=0;string[i];i++){ string[i]=string[i]+3; } textcolor(GREEN); printf(" "); cprintf("Encoded string is as follow : %s",string); //decompressed logicfor(i=0;string[i];i++){ string[i]=string[i]-3; } textcolor(GREEN); printf(" "); cprintf("De-Encoded string is as follow : %s",string); getch(); }

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