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lab4/NamesAndSuranmes.c

+#include <stdio.h>
+#include <string.h>
+int main(){
+	int coincide;
+	coincide=0;
+	char names[10][100];
+
+	for(int i = 0; i < 10; i++){
+			printf("Write the name:\n");
+			scanf("%s", names[i]);
+			for(int j = 0; j < strlen(names[i]);j++){
+				if((names[i][j]>64)&&(names[i][j]<91))
+					names[i][j]+=32;
+				}
+
+		}
+	printf("\n");
+	printf("Names in lower case\n");
+	printf("\n");
+	for(int i = 0; i < 10; i++){
+			printf("%s\n", names[i]);
+		}
+	printf("Thank you\n");
+	
+	for(int i=0; i < 10; i++){
+
+		for(int j=i+1; j < 10; j++){
+
+			
+		if (0==strcmp(names[i], names[j])){
+				printf("You have the next dublicate:  ");
+				printf("%s\n", names[i]);
+				coincide = 1;
+				}
+			}
+				
+	}
+	if (coincide == 0){
+		printf("Your names do not have a duplicate");
+		}else{
+			printf("Your names have a duplicate");
+			}
+	return 0;
+}
+