#include #include char sz_1[] = "Upper/LOWER."; char sz_2[] = "mIXeD CaSe.."; /* copies psz_2 to psz_1, downcases all letters */ void dostr (char* psz_1,char* psz_2) { uint8_t u8_c; while (*psz_2 != 0) { u8_c = *psz_2; if (u8_c > 0x2F) { /* make sure it is not a special char */ *psz_1 = u8_c | 0x20; /* sets this bit */ } else { /* leave special chars alone */ *psz_1 = u8_c; } psz_1++; psz_2++; } } int main(void) { // Bug: MPLAB X v1.80 printf bug means strings vis %s don't print correctly. // So, break printf into two statements. printf("Before...\n"); printf("sz_1: '"); printf(sz_1); printf("'\n"); printf("sz_2: '"); printf(sz_2); printf("'\n"); dostr(sz_1,sz_2); printf("After...\n"); printf("sz_1: '"); printf(sz_1); printf("'\n"); printf("sz_2: '"); printf(sz_2); printf("'\n"); return 0; } convert it in assembly
#include <stdio.h>
#include <stdint.h>
char sz_1[] = "Upper/LOWER.";
char sz_2[] = "mIXeD CaSe..";
/* copies psz_2 to psz_1, downcases all letters */
void dostr (char* psz_1,char* psz_2) {
uint8_t u8_c;
while (*psz_2 != 0) {
u8_c = *psz_2;
if (u8_c > 0x2F) {
/* make sure it is not a special char */
*psz_1 = u8_c | 0x20; /* sets this bit */
} else {
/* leave special chars alone */
*psz_1 = u8_c;
}
psz_1++;
psz_2++;
}
}
int main(void) {
// Bug: MPLAB X v1.80 printf bug means strings vis %s don't print correctly.
// So, break printf into two statements.
printf("Before...\n");
printf("sz_1: '"); printf(sz_1); printf("'\n");
printf("sz_2: '"); printf(sz_2); printf("'\n");
dostr(sz_1,sz_2);
printf("After...\n");
printf("sz_1: '"); printf(sz_1); printf("'\n");
printf("sz_2: '"); printf(sz_2); printf("'\n");
return 0;
}
convert it in assembly
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