Add simple C program to check student's grade

This commit introduces a basic C program that checks a student's grade
and prints "Passed" if the grade is greater than or equal to 60, and
"Failed" otherwise.

Author: smokemh

Structured Task Deveolpment in C/ifelse.c

@@ -0,0 +1,22 @@
+#include <stdio.h>
+
+int main()
+{
+    // Assume grade is a variable representing a student's score
+
+    int grade = 75; // You can replace this with the actual grade value
+
+    // Check if the grade is greater than or equal to 60
+    if (grade >= 60)
+    {
+        // If true, print "Passed"
+        printf("Passed\n");
+    } // end if
+    else
+    {
+        // If false, print "Failed"
+        printf("Failed\n");
+    } // end else
+
+    return 0;
+}