added more codes

Author: Lavin-tom

coding_challenge/a.out

@@ -0,0 +1,16 @@
+//extracting no from a string
+
+#include<stdio.h>
+int main()
+{
+	char string[50];
+	int sum=0,d=1;
+	printf("enter string\n");
+	scanf("%[^\n]s",string);
+	
+	for(int i=0;string[i];i++){
+		if(string[i]>=48 && string[i]<=58)	
+			sum=(sum*10)+(string[i]-48);		
+	}
+	printf("%d\n",sum);
+}

coding_challenge/extracting_no_from_a_string.c

@@ -0,0 +1,16 @@
+//extracting no from a string
+
+#include<stdio.h>
+int main()
+{
+	char string[50];
+	int sum=0;
+	printf("enter string\n");
+	scanf("%[^\n]s",string);
+	
+	for(int i=0;string[i];i++){
+		if(string[i]>=48 && string[i]<=58)
+			sum=((string[i]-48)*10)+sum;
+	}
+	printf("%d\n",sum);
+}

coding_challenge/translate_from_human_to_programmer.c

@@ -0,0 +1,22 @@
+//count duplicate element in an array
+#include<stdio.h>
+int main()
+{
+	int arr[5],count=0;
+	printf("enter array elements\n");
+
+	for(int i=0;i<5;i++)
+		scanf("%d",&arr[i]);
+
+	for(int i=0;i<5;i++){
+		for(int j=0;j<5;j++){
+			if(arr[i]==arr[j])
+				count++;
+		}
+		if(count>1){
+			printf("%d is duplicated %d times\n",arr[i],count);
+			break;
+		}
+		count=0;
+	}
+}

random_pgrms/count_duplicate_elements_in_an_array.c

@@ -0,0 +1,10 @@
+//wap to find pc is little endian or big endian
+#include<stdio.h>
+int main()
+{
+	char a=1;
+	if((a>>8) == 0)
+		printf("Little endian\n");
+	else
+		printf("Big endian\n");
+}

random_pgrms/little_endian_or_big_endian.c

@@ -0,0 +1,17 @@
+//swapping of two variale without using third variable
+#include<stdio.h>
+int main()
+{
+	int a,b;
+	printf("enter a and b\n");
+	scanf("%d %d",&a,&b);
+
+	printf("Before swapping a:%d b:%d\n",a,b);
+
+	//swapping
+	a=a+b;
+	b=a-b;
+	a=a-b;
+
+	printf("After swapping a:%d b:%d\n",a,b);
+}

random_pgrms/swapping_of_two_variables_without_temp_variable.c

@@ -0,0 +1,18 @@
+//toggle and reset
+#include<stdio.h>
+int main()
+{
+	int num,count=0;
+	printf("enter num\n");
+	scanf("%d",&num);
+
+	for(int i=7;i>=0;i--){
+		printf("%d",num>>i&1);
+		if((num>>i&1)==0)
+			count++;
+	}
+	if(count%2==0)
+		printf("\neven\n");
+	else
+		printf("\nodd\n");
+}