Question

/*
* This program reads characters from stdin and writes them back to stdout.
* Student task: change code so that output is rotated output one position
* to the left. Thus, if input is "abcd", output should be "bcda".

#include <stdio.h>
#define BUFFER_SIZE 81

int main(int argc, char **argv) {
char string[BUFFER_SIZE];

while(fgets(string, BUFFER_SIZE, stdin) > 0) {
int numChars = 0;
while(string[numChars] && string[numChars] != '\n')
++numChars;

int i;
for(i = 0; i < numChars; ++i)
putchar(string[i]);

putchar('\n');
fflush(stdout);
}

return 0;
}

Answer 1

/*
* This program reads characters from stdin and writes them back to stdout.
* Student task: change code so that output is rotated output one position
* to the left. Thus, if input is "abcd", output should be "bcda".
*/
#include <stdio.h>
#define BUFFER_SIZE 81

int main(int argc, char **argv) {
char string[BUFFER_SIZE];

while(fgets(string, BUFFER_SIZE, stdin) > 0) {
int numChars = 0;
while(string[numChars] && string[numChars] != '\n')
++numChars;

int i;
for(i = 1; i < numChars; ++i)
putchar(string[i]);
putchar(string[0]);
putchar('\n');
fflush(stdout);
}

return 0;
}