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30 lines
732 B
30 lines
732 B
/* Exercise 5-4. Write the function strend(s,t), which returns 1 if the string t
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* occurs at the end of the string s, and zero otherwise. */
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#include <stdio.h>
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int strend(char *ab, char *b) {
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// needle does the search
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char *needle = b;
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// as long as we don't reach the end of ab
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while (*ab) {
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// check if they match, and move to next char
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if (*ab++ != *needle++) {
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// reset needle each time they don't match
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needle = b;
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}
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}
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// are they both '\0'
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return *ab == *needle;
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}
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int main() {
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char *ab = "Hello K&R!";
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char *b = "K&R!";
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char *c = "Boo!";
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printf("Does %s end with %s? %d\n", ab, b, strend(ab, b));
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printf("Does %s end with %s? %d\n", ab, c, strend(ab, c));
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return 0;
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}
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