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B.TECH I YEAR • I SEMESTER • R25

Programming for Problem Solving - Lab Manual

C Programming Laboratory • Program Solution

📘 R25 Regulation 🎓 I Year 📚 I Semester 💻 C Programming 🧪 Lab Program
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Write a C program that uses functions to insert a sub-string into a given main string from a given position.

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Write a C program that uses functions to insert a sub-string into a given main string from a given position.

C Program 
//insert a sub-string into a given main string from a given position.
#include <stdio.h>
#include <string.h>

int main()
{
    char str[100], sub[50], result[150];
    int pos;

    printf("Enter the main string: ");
    scanf(" %[^\n]", str);

    printf("Enter the substring: ");
    scanf(" %[^\n]", sub);

    printf("Enter the position: ");
    scanf("%d", &pos);

    strncpy(result, str, pos);  // Copy string up to position
    strcat(result, sub);      // Insert substring
    strcat(result, str + pos);  // Append remaining part

    printf("Modified string: %s\n", result);

    return 0;
}

OUTPUT
Enter the main string: welcome to Glance
Enter the substring: Study
Enter the position to insert the substring: 11
Modified string: welcome to StudyGlance

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Write a C program that uses functions to insert a sub-string into a given main string from a given position.
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