Introduction
C program to convert a string to upper case. I have used Code:: Blocks compiler for debugging purpose. But you can use any C programming language compiler as per your availability.
#include <stdio.h> #include <string.h> int main() { char string[1000]; printf("Input a string to convert to lower case\n"); gets(string); printf("Characters in Uppercase: \"%s\"\n",strupr(string)); // strupr is use to convert lower case character to upper case return 0; }
Result
![C program to convert a string to upper case](https://techstudys.com/wp-content/uploads/2021/07/34.png)