fixed primeinrange.c file issue

calculator.c

@@ -1,32 +1,36 @@
-//C program to display simple calculator.
-
-#include<stdio.h>
-#include<math.h>
-int main()
-{
-  float n1,n2;              //Declaring two float varibles, which we will later use as two operands.
-  char operator;            //The operator is a char varible which will store our choice of operator. ex. +, -, *, /
-  printf("Enter an operator(+,-,/,*,^):");
-  scanf("%c",&operator);    //Taking input from user as what operation they want to perform.
-
-  printf("Enter two numbers:");
-  scanf("%f%f",&n1,&n2);    //Taking float inputs as operands and storing then in n1 and n2 respectively
-
-  switch(operator)          //Here depending upon the operator input switch statement will decide which case to execute
-  {
-      //The %.3f will allow only three values after the dot(.) to print in the float
-    case'+' : printf("%.3f + %.3f = %.3f",n1,n2,(n1+n2)); 
-              break;
-    case'-' : printf("%.3f - %.3f = %.3f",n1,n2,(n1-n2));
-              break;
-    case'/' : printf("%.3f / %.3f = %.3f",n1,n2,(n1/n2));
-              break;
-    case'*' : printf("%.3f * %.3f = %.3f",n1,n2,(n1*n2));
-              break;
-    case'^' : printf("%.3f ^ %.3f = %.3f",n1,n2,pow(n1, n2));
-              break;
-    default: printf("Error! operator is wrong");
-
-  }
-  return 0;
-}
+#include<stdio.h>
+int main()
+{
+    int a, b;
+    char op;
+    int result;
+    printf("Enter First Number:");
+    scanf("%d", &a);
+    printf("Enter Second Number:");
+    scanf("%d", &b);
+    printf("Enter Operator of the Operation you want to perform :");
+    scanf(" %c", &op);
+    switch (op)
+    {
+    case '+':
+        result=a+b;
+        printf("The Sum Is %d", result);
+        break;
+    case '-':
+        result=a-b;
+        printf("The Subtract Is %d", result);
+        break;
+    case '*':
+        result=a*b;
+        printf("The Multiply Is %d", result);
+        break;
+    case '/':
+        result=a/b;
+        printf("The Division Is %d", result);
+        break;
+        default:
+    printf("Please Enter a valid Operator");
+        break;
+    }
+    return 0;
+}

primeinrange.c

@@ -3,23 +3,24 @@
 #include<stdio.h>
 void main()
 {
-  int num,i,count;
-  printf("Prime numbers b/w 1 to 100:");
+  int num,i,count;  //initialization of variables
+  printf("Prime numbers b/w 1 to 100:\n");
 
-  for(num=1;num<=100;num++)
+  for(num=1;num<=100;num++) //loop to iterate number from 1 to 100 
   {
-    count=0;
-    for(i=2;i=(num/2);i++)
+    count=0;  
+    for(i=2;i<=(num/2);i++)  
     {
-      if(num%i==0)
+      if(num%i==0)  // if number is divisible by i then it is not a prime number
       {
-        count++;
-        break;
+        count++;   // so increment the count 
+        break;      // breaking the loop
       }
     }
-    if(count==0&&num!=1)
+    if(count==0&&num!=1)   //checking whether it is a prime number or not if it is a prime number
     {
-      printf("%d",num);
+      printf("%d ",num);  //print the number
+
     }
   }
 }