strcpy, C (gcc) - rextester

strcpy

// Template program for the second problem on list -- strcopy
// What happens when the string that you copy doesn't fit in 
// the destination string's statically allocated space?

#include  <stdio.h>

#define SOURCE_SIZE 30
#define DEST_SIZE 10

// Your strcopy implementation goes here
// Right now the function just returns the
// source string length
int strcopy(const char* source, char* dest)
{
    int i;
    for (i=0; ; i++) {
        if (source[i]==0) {
            return(i);
        }
    }
}

int main(void)
{
    // my array for the string
    char sourceString[SOURCE_SIZE];
    char destString[DEST_SIZE];
    
    int stringLength;
    
    printf("Example program for my strcopy implmentation\n");
    
    // First read in an input string
    if (fgets(sourceString, SOURCE_SIZE, stdin)) {
        // input has worked, do something with data
        stringLength = strcopy(sourceString, destString);
        if (stringLength >= 0) {
            printf("Read in the string \"%s\", length calculated as %d\n",
                   sourceString, stringLength);
            printf("Copied version of the string is \"%s\"\n",
                   destString);
        } else {
            printf("Error calculating string length!\n");
        }           
    } else {
        printf("Error reading in the string!\n");
    }
    
    return 0;
}


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