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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. #define MAXLEN (50+1)
  5.  
  6. int cypher(char source[], char destination[],int key)	{
  7. 	int i;
  8. 	for(i = 0; source[i] != '\0' && i < MAXLEN; i++)	{
  9. 		destination[i] = source[i] + key;
  10. 		if(destination[i] > 125)	{
  11. 			destination[i] -= 94;
  12. 		}
  13. 	}
  14. 	destination[i] = '\0';
  15. 	return 0;
  16. }
  17.  
  18.  
  19. int main(void)	{
  20. 	char source[MAXLEN], destination[MAXLEN];
  21. 	int key;
  22. 	printf("Enter text to encrypt: ");
  23. 	scanf("%s",source);
  24. 	printf("Enter encryption key: ");
  25. 	scanf("%d",&key);
  26. 	cypher(source,destination,key);
  27. 	printf("Source:\n %s\nEncrypted:\n %s\n",source,destination);
  28. 	return 0;
  29. }
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https://ideone.com/zUoWj
language:
C (gcc 8.3)
created:
14 years ago
visibility:
public

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