The Program in C to concatenate two strings when user gives an input is given below:
#include <stdio.h>
#include <string.h>
int main() {
char str1[100], str2[100], result[200];
printf("Enter first string: ");
scanf("%s", str1);
printf("Enter second string: ");
scanf("%s", str2);
strcpy(result, str1);
strcat(result, str2);
printf("Concatenated string: %s\n", result);
return 0;
}
Output:
Enter first string: 23
Enter second string: 26
Concatenated string: 2326
Pro-Tips💡
This program uses the scanf function to read in two strings from the user, and stores them in the str1 and str2 variables.
It then uses the strcpy function to copy the contents of str1 into the result variable, and the strcat function to concatenate the contents of str2 to the end of result.
Finally it prints the concatenated string which is stored in the result variable.
You can also use the snprintf() function to concatenate the strings.
snprintf(result, sizeof(result), "%s%s", str1, str2);
This function writes the concatenated string to the result buffer, and it’s safe because it limits the number of characters to be written to the buffer to the size of the buffer.
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