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C Program to Solve Two Sum Using Brute Force (With Algorithm & Output)

 Introduction The Two Sum problem is a popular coding interview question where we must find two indices of an array whose values add up to a given target. This program demonstrates a simple brute-force solution in C using nested loops and dynamic memory allocation. Problem Statement Given an integer array and a target value, return the indices of the two numbers such that they add up to the target. Each input has exactly one solution, and the same element cannot be used twice. The result should return the indices, not the values. If no solution exists, return NULL.  Algorithm / Logic Explanation Start the program. Traverse the array using a loop from index 0 to numsSize - 1 . Inside this loop, use another loop starting from i + 1 to numsSize - 1 . For every pair (i, j) , check if nums[i] + nums[j] == target . If condition becomes true: Allocate memory for 2 integers using malloc() . Store indices i and j . Set returnSize = 2 . Return the result poi...
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Student Records Using Structure Array in C

Student Records Using Structure Array in C

✅ Student Records Using Structure Array in C

#include <stdio.h>

struct student {
    char name[50];
    int roll;
    float marks;
};

int main() {
    int n;
    printf("Enter number of students: ");
    scanf("%d", &n);

    struct student s[n];  // Array of structs

    // Input Section
    for(int i = 0; i < n; i++) {
        printf("\n=== ENTER DETAILS OF STUDENT %d ===\n", i + 1);
        printf("Name: ");
        scanf(" %[^\n]", s[i].name);  // Accepts spaces

        printf("Roll Number: ");
        scanf("%d", &s[i].roll);

        printf("Marks: ");
        scanf("%f", &s[i].marks);
    }

    // Output Section
    printf("\n=== STUDENT DETAILS ===\n");
    for(int i = 0; i < n; i++) {
        printf("\nStudent %d\n", i + 1);
        printf("Name       : %s\n", s[i].name);
        printf("Roll Number: %d\n", s[i].roll);
        printf("Marks      : %.2f\n", s[i].marks);
    }

    return 0;
}

📘 Explanation:

This C program uses an array of structures to store details of multiple students. The structure student has fields for name, roll number, and marks. The program prompts the user for the number of students, then collects their data using a loop, and finally prints all the stored data. Useful in managing records in a structured format.

🧾 Sample Output:

Enter number of students: 2

=== ENTER DETAILS OF STUDENT 1 ===
Name: Naveen Kumar
Roll Number: 101
Marks: 85.5

=== ENTER DETAILS OF STUDENT 2 ===
Name: Ravi Teja
Roll Number: 102
Marks: 91

=== STUDENT DETAILS ===

Student 1
Name       : Naveen Kumar
Roll Number: 101
Marks      : 85.50

Student 2
Name       : Ravi Teja
Roll Number: 102
Marks      : 91.00

🔑 Keywords:

Structure Array in C, C Student Record Program, Array of Structures, Student Information Storage in C, struct keyword in C, C Programming for Beginners

📌 Hashtags:

#CProgramming #StructuresInC #StudentRecord #ArrayOfStructures #BeginnerCProgram #CollegeAssignment #LearnCProgramming

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