题解 | #字符串加解密#
字符串加解密
http://www.nowcoder.com/practice/2aa32b378a024755a3f251e75cbf233a
根据描述敲代码就可以了，没什么难度。
#include"stdio.h"
#include"string.h"
char str_1[1001] = { 0 };
char str_2[1001] = { 0 };
int main(void) {
int len, i;
scanf("%s", str_1);
scanf("%s", str_2);
len = strlen(str_1);
for (i = 0; i < len; i++) {
if (str_1[i] >= 'A' && str_1[i] < 'Z') {
str_1[i] = str_1[i] + ('a' - 'A') + 1;
} else if (str_1[i] == 'Z') {
str_1[i] = 'a';
} else if (str_1[i] >= 'a' && str_1[i] < 'z') {
str_1[i] = str_1[i] - ('a' - 'A') + 1;
} else if (str_1[i] == 'z') {
str_1[i] = 'A';
} else if (str_1[i] >= '0' && str_1[i] < '9') {
str_1[i] = str_1[i] + 1;
} else if (str_1[i] == '9') {
str_1[i] = '0';
}
}
printf("%s\n", str_1);
len = strlen(str_2);
for (i = 0; i < len; i++) {
if (str_2[i] > 'A' && str_2[i] <= 'Z') {
str_2[i] = str_2[i] + ('a' - 'A') - 1;
} else if (str_2[i] == 'A') {
str_2[i] = 'z';
} else if (str_2[i] > 'a' && str_2[i] <= 'z') {
str_2[i] = str_2[i] - ('a' - 'A') - 1;
} else if (str_2[i] == 'a') {
str_2[i] = 'Z';
} else if (str_2[i] > '0' && str_2[i] <= '9') {
str_2[i] = str_2[i] - 1;
} else if (str_2[i] == '0') {
str_2[i] = '9';
}
}
printf("%s", str_2);
return 0;
}
