Use ascii to encrypt strings and ascii to encrypt strings

Use ascii to encrypt strings and ascii to encrypt strings

Algorithm: replace the original letter with the fourth letter after the original letter.
Plaintext: China ciphertext: Glmre

# Include <stdio. h> int main () {char c1, c2, c3, c4, c5; c1 = 'C'; c2 = 'H'; c3 = 'I '; c4 = 'n'; c5 = 'a'; c1 + = 4; // convert the character of c1 to ascii code plus 4 and then assign c1 c2 + = 4; // convert the c2 character into an ascii code plus 4 and then assign it to c2 itself c3 + = 4; // convert the c3 character into an ascii code plus 4 and then assign the c3 c4 + = 4; // convert c4 characters into ascii codes plus 4 and then assign c4 c5 + = 4; // convert c5 characters into ascii codes plus 4 and then assign them to c5 putchar (c1); putchar (c2); putchar (c3); putchar (c4 ); putchar (c5); printf ("\ n % c \ n", c1, c2, c3, c4, c5); return 0 ;}