/* input: any string that you like */ #include #include #include int main() { char in[50]; //={'M','E','S','S','A','G','E'}; gets(in); puts("String:"); puts(in); char out[80]; int i,j,k,l=0,m,n; int key; scanf("%d",&key); printf("\nKey:%d",key); //printf("enter msg to encrypt:"); //scanf("%s",in); //printf("key:"); //scanf("%d",&key); char c; for(i=0;i=0&&num1<=9) { num1=num1+key; in[i]=num1; } */ if(c>='a' && c<='z') { c=c+key; if(c>'z') { c=c-'z'+'a'-1; } in[i]=c; } if(c>='A' && c<='Z') { c=c+key; if(c>'Z') { c=c-'Z'+'A'-1; } in[i]=c; } /* if(c>='0'&&c<='9') { //printf("%c",c) ; c=c+key; in[i]=c; } */ } printf("\nEncrypted Msg:%s",in); printf("\n"); char d; int de_key=key; printf("\nDecryption Key:%d",de_key); //printf("\nenter decryption key:"); //scanf("%d",&de_key); for(i=0;i='a' && d<='z') { d=d-de_key; if(d<'a') { d=d+'z'-'a'+1; } in[i]=d; } if(d>='A' && d<='Z') { d=d-de_key; if(d<'A') { d=d+'Z'-'A'+1; } in[i]=d; } /* if(d>='0'&&d<='9') { //printf("%c",c) ; d=d-de_key; in[i]=d; } */ } printf("\nDecrypted Msg:%s",in); printf("\n"); printf("\n__________________________________________"); printf("\n|\t|\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t|\t\t\t\t\n|\t| ->Developer:Asif Bilakhiya\t\t\t\t\t\t\t\t\t|\n|\t| ->https://www.sololearn.com/Profile/928735/?ref=app\t\t\t\t\t|\n|\t|\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t|\n|\t| if(u_satisfy(true))\t\t\t\t\t\t\t\t\t\t\t\t\t\t|\n|\t| {\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t|\n|\t| like(please);\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t|\n|\t| }\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t|\n"); printf("------------------------------------------"); return 0; }

C-5: Perfact Ceaser Cipher✓✓C