Question

How to convert a string to upper case (all upper) in C

Answer 1

#include <stdio.h>
#include <ctype.h> 
 
int main(void)
{
    char sentence[50] = "C Programming is fun";
    int i;
 
    for(i = 0; sentence[i]; i++)
        sentence[i] = toupper(sentence[i]);
 
    puts(sentence);
    
     
    return 0;
}
 
/*
run:
 
C PROGRAMMING IS FUN
 
*/

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