add 009_statements.cpp

Author: priteshgohil

009_statements.cpp

@@ -0,0 +1,101 @@
+#include<iostream>
+#include<string>
+
+int main(int argc, char const *argv[]) {
+  // if statement
+  std::cout << "\nif" << '\n';
+  int nCount = 500;
+  if (nCount == 500){
+    std::cout << "If condition is True" << '\n';
+  }
+
+  // if .. else
+  std::cout << "\nif .. else" << '\n';
+  if (nCount == 200){
+    std::cout << "Block of If statement" << '\n';
+  }
+  else {
+    std::cout << "Else part is executed" << '\n';
+  }
+
+  // if.. else if.. else
+  std::cout << "\nif .. else if .. else" << '\n';
+  int nSize = 30;
+  if (nSize > 50){
+    std::cout << "Size is > 50" << '\n';
+  }
+  else if (nSize < 0) {
+    std::cout << "Size is < 0" << '\n';
+  }
+  else{
+    std::cout << "Size is between 0 and 50" << '\n';
+  }
+
+  //Iteration: while loop
+  std::cout << "\nwhile loop" << '\n';
+  nCount = 3;
+  while (nCount-- > 0) {
+    std::cout << "Counter is: " << nCount << '\n';
+  }
+
+  // Iteration: do .. while loop
+  std::cout << "\ndo .. while loop" << '\n';
+  nCount = 3;
+  do {
+    std::cout << "Counter is: " << nCount << '\n';
+  } while(nCount-- > 0);
+
+  // Iteration: for loop
+  std::cout << "\nfor loop" << '\n';
+  nCount = 3;
+  for (size_t i = 0; i < nCount; i++) {
+    std::cout <<  "Loop iteration; " << i << '\n';
+  }
+
+  std::cout << "\nfor loop: Range based" << '\n';
+  std::string sLine = "Hello World";
+  for (char c: sLine) {
+    std::cout << c << '\n';
+  }
+
+
+  // break
+  std::cout << "\nbreak statement" << '\n';
+  nCount = 0;
+  while(true) {
+    std::cout << "Iterate forever" << '\n';
+    nCount++;
+    if (nCount ==1){
+      break;
+    }
+  }
+
+  // Continue
+  std::cout << "\ncontinue statement" << '\n';
+  nCount = 3;
+  for (size_t i = 0; i <= nCount; i++) {
+    if (i==2){
+      continue;
+    }
+    std::cout << "Iteration : " << i  << '\n';
+  }
+
+  // Switch (NOTE: WORKS ONLY WITH Integer)
+  std::cout << "\nSwitch case" << '\n';
+  int nCase = 5;
+  switch (nCase) {
+    case 1:
+      std::cout << "12*1 = " << 12*1 << '\n';
+      break;
+    case 2:
+      std::cout << "12*2 = " << 12*2 << '\n';
+      break;
+    case 5:
+      std::cout << "12*5 = " << 12*5 << '\n';
+      break;
+    default:
+      std::cout << "please provide valid case" << '\n';
+  }
+
+  return EXIT_SUCCESS;
+}