c strings compare
You can’t (usefully) compare strings using !=
or ==
, you need to use strcmp
.
Use strcmp
while (strcmp(check,input) != 0)
or
while (!strcmp(check,input))
Compare Strings
#include <stdio.h> int compareStrings(const char *s1, const char *s2) { int i = 0, answer; while (*s1 == *s2 && *s1 != '\0' && *s2 != '\0') { s1++; s2++; // printf("%s\n%s\n\n", s1, s2); } if (*s1 < *s2) answer = -1; else if (*s1 == *s2) answer = 0; else answer = 1; return answer; } int main (void) { const char s1[30] = "Hello World"; const char s2[30] = "Hello World"; int j = compareStrings(s1, s2); printf("%i\n", j); return 0; }
The Above Code returns
int main (void) { const char s1[30] = "Hello"; const char s2[30] = "Hello World"; int k = compareStrings(s1, s2); printf("%i\n", k); return 0; }
The Above Code returns -1