Program 222:
Explanation:#include<stdio.h> #include<string.h> main() { //Decryption //X-A,Y-B,Z-C,A-D,B-E,C-F... if number=1 //W-A,X-B,Y-C,Z-D,A-E,B-F... if number=2 and so on int i,number; char str[1000],str1[1000]; printf("Enter a sentence\n"); gets(str); printf("Enter the number to change alphabetical order\n"); scanf("%d",&number); i=0; printf("Decrypted Caesar code\n\n"); while(str[i]!='\0') { if(!((str[i]>=0&&str[i]<65)||(str[i]>90&&str[i]<97)||(str[i]>122&&str[i]<=127))) { if((str[i]>='a')&&(str[i]<'z'-number-1)) { printf("%c",str[i]+number+2); } else if(str[i]>='A'&&str[i]<'Z'-number-1) { printf("%c",str[i]+number+2); } else { printf("%c",str[i]-24+number); } } if(((str[i]>=0&&str[i]<65)||(str[i]>90&&str[i]<97)||(str[i]>122&&str[i]<=127))) { printf("%c",str[i]); } i++; } printf("\n"); }
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Output:
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