diff --git a/lab3123.c b/lab3123.c
new file mode 100644
index 0000000..d4bbac1
--- /dev/null
+++ b/lab3123.c
@@ -0,0 +1,74 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+int main ()
+{
+	char* text=(char*)malloc(10000*sizeof(char));
+	char c;
+	int i=0,n=0,m=0,len=0,fl=0;
+	while ((c=getchar()) !='\n')
+		{
+		text[i++]=c ;
+		}
+
+	for (i=0;i<10000;i++)
+		{
+		if (text[i] == '.' || text[i] == '?' || text[i] == ';') 
+			{
+				i++;   		 
+				text[i] = '\n';
+			}		    
+                if (text[i]=='\t')
+			{
+				text[i]=0;   
+			}	      
+				
+
+		}
+
+	 if (text[i] == '.' || text[i] == '?' || text[i] == ';')
+	{
+                len=i;
+                for (i>0;i<len;i++){
+                if (isalpha(text[i]) ==0 &&  text[i-1] !=' ')
+
+                        {
+                        i=i-len;
+                        printf("%c",text[len]);
+                        }
+
+                else
+                printf("%c",text[len]);
+                        i++;
+
+                                    }
+         }
+
+
+
+return 0;
+}
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