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#include <stdio.h>
char line[100];/* line of data from the input */
int result; /* the result of the calculations */
char operator; /* operator the user specified */
int value; /* value specified after the operator */
main()
{
result = 0; /* initialize the result */
/* Loop forever (or till we hit the break statement) */
while (1) {
(void) printf("Result: %d\n", result);
(void) printf("Enter operator and number: ");
(void) fgets(line, sizeof(line), stdin);
(void) sscanf(line, "%c %d", &operator, &value);
if (operator = '+') {
result += value;
} else {
(void) printf("Unknown operator %c\n", operator);
}
}
}
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