26 lines
587 B
C
26 lines
587 B
C
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#include <stdio.h>
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#include <math.h>
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int main() {
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int rc; // used to check return codes of scanf
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float radius, height;
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printf("Enter radius: ");
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rc = scanf("%f", &radius);
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// scanf returns number of scanned items
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if (rc != 1) {
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printf("Please enter an positive real integer or decimal\n");
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return 1;
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}
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printf("Enter height: ");
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rc = scanf("%f", &height);
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// scanf returns number of scanned items
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if (rc != 1) {
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printf("Please enter an positive real integer or decimal\n");
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return 1;
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}
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printf("Surface area: %f\n", 2*M_PI*radius*radius + 2*M_PI*radius*height);
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}
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