1.22

1 files changed, 53 insertions, 0 deletions

diff --git a/1/22.c b/1/22.c
new file mode 100644
index 0000000..39dbd6c
--- /dev/null
+++ b/1/22.c
@@ -0,0 +1,53 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#define MAXLEN 1000
+
+void getstr(char s[]);
+void fold(char to[], char from[], int n);
+
+/* folds long input */
+int main(int argc, char *argv[]) {
+  char s[MAXLEN], f[MAXLEN];
+
+  printf("Enter some text and press ctrl+d to wrap text\n");
+
+  getstr(s);
+  fold(f, s, atoi(argv[1]));
+  printf("\n%s\n", f);
+
+  return 0;
+}
+
+void getstr(char s[]) {
+  int i, c;
+
+  for (i = 0; i < MAXLEN - 1 && (c = getchar()) != EOF; i++)
+    s[i] = c;
+  s[i] = '\0';
+}
+
+void fold(char to[], char from[], int n) {
+  int i, j, len, blank;
+  char c;
+
+  len = 0;
+
+  for (i = 0, j = 0; j < MAXLEN - 1 && (c = from[i]) != '\0'; i++) {
+    blank = c == ' ' || c == '\t';
+    if (len == 0 && blank)
+      continue;
+
+    if (len >= n) {
+      if (!blank) {
+        to[j++] = '\n';
+        len = 0;
+      }
+    }
+
+    to[j++] = c;
+    len++;
+  }
+
+  to[j] = '\0';
+}
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