String Concatenation


#include <stdio.h>
#include <string.h>

void concat(char[], char[]);

int main() {
    char s1[50], s2[30];

    printf("\nEnter String 1: ");
    gets(s1);

    printf("\nEnter String 2: ");
    gets(s2);

    concat(s1, s2);

    printf("\nConcated string is: %s", s1);

    return (0);
}

void concat(char s1[], char s2[]) {
    int i, j;
    i = strlen(s1);

    for (j = 0; s2[j] != '\0'; i++, j++) {
        s1[i] = s2[j];
    }

    s1[i] = '\0';
}