Introduction to Programming in C Slot 1: Question 2 Solution

 

Slot 1: Question 2

Due on 2020-12-05, 11:00 IST

You are given a string (of at most 100 characters) consisting of

lowercase characters, terminated with a # symbol. The string is the

"encrypted" form of an original string as follows - each character in

the original string has been shifted by a fixed integer n (where 1<= n

<= 25).

Assuming that a is the 0th character in the alphabet, ..., and z is

the 25th character of the alphabet, in the encrypted version, we have: 

a becomes the nth character in the alphabet

b becomes the (n+1)%26th character in the alphabet,

...

and so on.

n is not known to you. You only know that the first character

represents 't'. From this information, you have to output the

original string.

Your last recorded submission was on 2020-12-05, 10:53 IST

Select the Language for this assignment.      --                     C               

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#include <stdio.h>

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int main() {

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    char s[100];

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    scanf("%s", s);

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    int diff = 't' - s[0];

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    int i = 0;

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    while(s[i] != '#') {

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        s[i] += diff % 26;

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        printf("%c", s[i]);

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        i++;

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    }

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    return 0;

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}

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